Plot up to 6 equations at once with this browser-based graphing calculator. Supports function (y=), polar (r=), and parametric modes. Use TRACE to walk along curves, ZOOM to explore details, and the CALC menu to find zeros, minima, maxima, intersections, derivatives, and definite integrals — the same tools you would use on a TI-84 Plus CE. Type an equation in the Y= editor and the graph appears instantly.
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This graphing calculator follows the TI-84 Plus CE workflow: the same Y= editor, WINDOW settings, ZOOM presets, TRACE navigation, and CALC menu. You can graph up to six equations at once across three modes — function (y=), polar (r=), and parametric. The graph updates as you type — there is no separate "submit" step. Every feature you learn here transfers directly to the physical calculator used on the SAT, ACT, and AP exams.
If you are taking Algebra I, Algebra II, Precalculus, or Calculus, the tools you need are all here: plot quadratics and find their zeros, graph trig functions and trace their periods, visualize derivatives and integrals, and solve systems by finding intersection points. The calculator runs in any browser — Chromebook, iPad, laptop, or phone — with nothing to install. For a complete walkthrough of the TI-84 workflow, see our guide to the TI-84 graphing calculator online.
If you have never used a graphing calculator before, here is the fastest way to get started. It takes about 30 seconds.
That is it. Once you know those five steps, you know how to use this whole calculator. The rest — polar graphs, parametric curves, finding intersections — is just learning which tab to click. If you want a deeper walkthrough, read our complete TI-84 graphing calculator guide.
Most of the time, you graph in function mode. That is the default. You type something like y = x² and you get a parabola. The x values go left to right. For every x, there is exactly one y. Simple.
Polar mode is different. Instead of x and y, you use r (the distance from the origin) and θ (the angle). Polar equations draw shapes that function mode cannot: circles, roses with petals, spirals, heart shapes (cardioids). If you want to graph a flower with five petals, type r = sin(5θ) in polar mode. The calculator handles the rest.
Parametric mode is the most flexible. Both x and y are written separately as functions of a third variable, t. Think of t like a clock. As t ticks forward, the (x, y) point moves and traces a path. Parametric equations can draw loops, figure-eights, and curves that double back on themselves — things you cannot express as y = something. A classic example: x = cos(t), y = sin(2t) draws a figure-eight (a Lissajous curve).
Switch modes from the MODE menu. If you are doing homework for a quadratic equations unit, stay in function mode. If you are in a trig chapter learning about roses and limacons, switch to polar. If you are in Calculus BC working with vector-valued functions, parametric is what you need.
The best way to learn is to type things in and see what happens. Here are six equations that show off different parts of the calculator. Copy any of them into the Y= editor and check the box.
| Equation | What you will see | Why it is cool |
|---|---|---|
| sin(x) | A smooth wave going up and down forever | The simplest trig function — every math student should see it |
| x^2 | A U-shaped parabola opening upward | The most important shape in Algebra I and II |
| x^3 - 3x | An S-curve with two humps | Shows a local max and local min — use CALC > Minimum to find them |
| 1/x | Two separate curves that never touch the axes | Shows vertical and horizontal asymptotes — key for Precalculus |
| sin(x^2) | A wave that gets tighter and tighter | Looks cool and shows how composition changes a function |
| 2sin(x) and sin(2x) | Type these in Y₁ and Y₂ to compare | See the difference between amplitude change and frequency change side by side |
After you try those, open the CALC tab and use the Intersect tool on two curves, or dy/dx to find the slope at a point. This is exactly what SAT and AP Calculus questions ask you to do — except here you can practice as many times as you want, for free.
Open the Y= editor tab on the right, type an equation next to Y₁ (try x^2 for a parabola or sin(x) for a sine wave), and check the box. The graph appears on the left immediately. Drag to pan, scroll to zoom, and use the arrow keys in TRACE mode to walk along the curve and see (x, y) coordinates at each point. For a detailed walkthrough with screenshots, follow the TI-84 graphing calculator tutorial.
Function mode (y=) is the default — for every x there is one y, producing parabolas, lines, exponentials, and most homework graphs. Polar mode uses distance (r) and angle (θ) from the origin to draw circles, spirals, and flower-like curves — try r = sin(5θ) for a five-petal rose. Parametric mode defines x and y separately as functions of a third variable t, drawing loops and figure-eights that function mode cannot — try x = cos(t), y = sin(2t) for a Lissajous curve. Switch modes from the MODE menu at any time.
Graph both equations (Y₁ and Y₂), then open the CALC tab and select Intersect. Click the first curve, then the second curve. The calculator marks the intersection point and displays the (x, y) coordinates. This is the same workflow as 2nd + TRACE → 5: Intersect on a TI-84. The x-value is the solution to Y₁ = Y₂ — check both equations produce the same y-value at that point.
Graph the function, then open the CALC tab and select Maximum or Minimum. You will be prompted to set a left bound and right bound around the peak or valley you want to find. Click to the left of the extremum, then to the right. The calculator finds the highest or lowest point between your bounds and displays the (x, y) coordinates. On a TI-84 this is 2nd + TRACE → 3: Minimum or 4: Maximum. This is a core skill for optimization problems in Calculus.
Use the Y= editor to enter each piece on a separate Y line, then restrict the domain using the WINDOW settings or by setting an appropriate Xmin/Xmax. For example, graph the two pieces of a split function on Y₁ and Y₂, then visually identify where they meet. The TRACE tool helps you compare values on each piece at the same x-coordinate. For algebraic piecewise evaluation, try the equation solver with domain conditions.
The SAT and ACT include questions that ask you to identify where two functions intersect, find the maximum or minimum of a graph, or determine how many solutions an equation has. Practice these exact tasks: use CALC → Intersect to solve f(x) = g(x), CALC → Minimum/Maximum for optimization, and graph both sides of an equation to count intersection points. The TRACE and CALC tools work identically to the approved calculator you will use on test day. For algebra-specific practice, see the TI-84 quadratic formula walkthrough.
Yes. In the Y= editor, use the style button next to each equation to change from a line to a shaded region (above or below the curve). This lets you graph linear inequalities like y > 2x + 1 or systems of inequalities where the solution is the overlapping shaded region. On a TI-84, this is done through the APPS → Inequalz menu. The shading makes it easy to see which (x, y) pairs satisfy all the inequalities at once.
Take a screenshot of the graph (Print Screen on Windows, Cmd+Shift+4 on Mac). Your WINDOW settings, equation list, and ZOOM memory slots are saved automatically in your browser's local storage — they persist when you close and reopen the page. To share a specific setup, copy the equations and window dimensions (Xmin, Xmax, Ymin, Ymax) — anyone can paste them into their own Calc84 to reproduce the exact same graph.
Once you can plot a curve, the same Y= and STAT PLOTS workflow carries over to fitting regression lines in the linear regression tutorial. When you need an exact symbolic answer instead of a graph, the equation solver works through linear to quartic equations step by step, and our TI calculator comparison guide shows how the TI-84 family fits into a full test-taking setup. To understand the shifting, stretching, and reflecting behind what you see on screen, Khan Academy's transformations unit pairs well with the live graphing tool.
Page last updated: August 8, 2026
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