## How do you do two variables on a TI-84?

How to Plot Two-Variable Data on the TI-84 Plus

1. Enter your data in the calculator.
2. Turn off any Stat Plots or functions in the Y= editor that you don’t want to be graphed along with your histogram.
3. Press [2nd][Y=] to access the Stat Plots menu and enter the number (1, 2, or 3) of the plot you want to define.

## How do you find the domain of a function with two variables?

The domain of functions of two variables, z=f(x,y) z = f ( x , y ) , are regions from two dimensional space and consist of all the coordinate pairs, (x,y) , that we could plug into the function and get back a real number.

Can a function have 2 variables?

A function of two variables is a function, that is, to each input is associated exactly one output. The inputs are ordered pairs, (x,y). The outputs are real numbers (each output is a single real number). The function can be written z=f(x,y).

How do you graph two variables?

Graph a linear equation by plotting points.

1. Find three points whose coordinates are solutions to the equation. Organize them in a table.
2. Plot the points in a rectangular coordinate system. Check that the points line up.
3. Draw the line through the three points.

### How do you find L1 and L2 on TI 84?

Press 2nd and 1 to obtain L1 and press 2nd and 2 to obtain L2.

### Which of the following is a function involving two variables?

The graph of a function of two variables is a surface in three-dimensional space. Definition 2 The graph of a function f with the two variables x and y is the surface z = f(x, y) formed by the points (x, y, z) in xyz-space with (x, y) in the domain of the function and z = f(x, y).

How do you determine the function of a graph?

One can determine if a relation is a function by graphing the relation, drawing a vertical line on the graph and then checking whether the line crosses the graph at more than one point.

How do you graph equations with two variables?

Linear equations with two variables may appear in the form Ax + By = C, and the resulting graph is always a straight line. More often, the equation takes the form y = mx + b, where m is the slope of the line of the corresponding graph and b is its y-intercept, the point at which the line meets the y-axis.

#### What is graph with two variables?

The graph of a function z = (x, y) of two variables is called a surface. To understand more completely the concept of plotting a set of ordered triples to obtain a surface in three-dimensional space, imagine the (x, y) coordinate system laying flat. Then, every point in the domain of the function f has a unique z -value associated with it.

#### What is equation with two variables?

A linear equation in two variables is an equation with two variables (usually called x and y) where the variables are at most multiplied by a number, and added to something else. No exponents, no variables in denominators, no fancy functions of the variables.