91Ó°ÊÓ

In the following exercises, a) graph each function b) state its domain and range.

Write the domain and range in interval notation.

$f\left(x\right)=\sqrt{x+1}$

a) Find the x-intercepts.

b) Find the y -intercepts.

c) Find f (−1).

d) Find f (1).

e) Find the domain. Write it in interval notation.

f) Find the range. Write it in interval notation.

Graph a line using the intercepts.

$y=-2x$

Graph a line using the intercepts.

$y=5x$

Graph a line using the intercepts.

$y=x$

In the following exercises, for each ordered pair, decide

a) is the ordered pair a solution to the equation? b) is the point on the line?

$y=x-4$

$A:\left(0,-4\right);B:\left(3,-1\right);C:\left(2,2\right);D:\left(1,-5\right)$

Graph a line using the intercepts.

$y=-x$

Graph the equation.

$y=\frac{3}{2}x$

Graph the equation.

$y=-\frac{2}{3}x$

Graph the equation.

$y=-\frac{1}{2}x+3$