3. Functions

Graph each equation. 2x +5y = 20

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.

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

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.

$y^3=x+4$

In Exercises 39–50, graph the given functions, f and g, in the same rectangular coordinate system. Select integers for x, starting with -2 and ending with 2. Once you have obtained your graphs, describe how the graph of g is related to the graph of f. f(x) = x, g(x) = x + 3