Chapter 3 Practice Test

Where does the graph of y = –3x – 18 intersect the x-axis?

• (0,6)

• (0,-6)

• (6,0)

• (-6,0)

Tickets to see a movie cost $5 for children and $8 for adults. The equation 5x + 8y = 80 represents the number of children (x) and adults (y) who can see the movie with $80.

If no adults see the movie, how many children can see the movie with $80?

• 6

• 10

• 13

• 16

Find the slope of the line through (3, 7) and (–1, 4)

•  $\frac{4}{3}$  

•  $\frac{3}{4}$  

•  $\frac{11}{2}$  

•  $\frac{2}{11}$  

Find the slope of the line through (–3, 2) and (6, 2)

• $\frac{4}{9}$

• $\frac{4}{3}$

• 0

• Undefined

Find the equation in slope-intercept form of a line with slope –2 and y-intercept 4.

• $y=-2x$

• $y=4x-2$

• $y=2x-4$

• $y=-2x+4$

Which graph has a slope of -3?

• 
• 
• 
• 

COMMUNICATION In 1996, there were 171 area codes in the United States. In 2007, there were 215. Find the rate of change from 1996 to 2007.

• 44

• 4

• $\frac{1}{4}$

• -4

Use the arithmetic sequence 12, 15, 18, 21, ...

Which is an equation for the nth term of the sequence?

• $a_n=3n+9$

• $a_n=9n+3$

• $a_n=12n+3$

• $a_n=n+3$

Use the arithmetic sequence 12, 15, 18, 21, ...

What is the 12th term in the sequence?

• 38

• 42

• 45

• 48

The graph of g(x) = (x + 1) is a transformation of the graph of f(x) = x. Which of the following describes the transformation?

• translation 1 unit down

• translation 1 unit up

• translation 1 unit right

• translation 1 unit left