3. Functions

Graph each equation. 2x +5y = 20

Graph each equation. 3y = x

Graph each equation. ƒ(x) = x

Use a graphing calculator to graph each equation in the standard viewing window. -2x + 5y = 10

Graph each equation.

$x-4y=8$

Graph each equation.

$\text{ƒ}\left(x\right)=3$

Graph each function.

$\text{ƒ}\left(x\right)=-\mid x\mid$

Graph each function.

$\text{ƒ}\left(x\right)=\mid x\mid -3$

Graph each function. ƒ(x) = 2∛(x+1)-2

Graph each function.

Determine whether each equation has a graph that is symmetric with respect to the x-axis, the y-axis, the origin, or none of these.

$y^3=x+4$

Determine whether each equation has a graph that is symmetric with respect to the x-axis, the y-axis, the origin, or none of these. |x| = |y|

For each equation, (a) give a table with at least three ordered pairs that are solutions, and (b) graph the equation. y=√(x-3)

Choose the correct answer: For function ƒ, the notation ƒ(3) means

A. the variable f times 3, or 3f.

B. the value of the dependent variable when the independent variable is 3.

C. the value of the independent variable when the dependent variable is 3.

D. f equals 3.