y-interceptANSWER

slopeANSWER

Prerequisite Skills VOCABULARY CHECK

Copy and complete the statement.

?In the equation y = mx + b, the value of m is theof the graph of the equation.

1.

?In the equation y = mx + b, the value of b is theof the graph of the equation.

2.

Prerequisite Skills VOCABULARY CHECK

parallelANSWER

3.

?Two lines are if their slopes are equal.

Prerequisite Skills SKILL CHECK

Find the slope of the line that passes through the points.

ANSWER 3 4

4. (4, 5), (2, 3) ANSWER 1

5. (0, –6), (8, 0)

6. (0, 0), (–1, 2) ANSWER –2

Prerequisite Skills SKILL CHECK

Identify the slope and the y-intercept of the line with the equation.

7. y = x + 1

8. y = x – 6 3 4

3 4

, –6ANSWER

1, 1ANSWER

9. y = – 25

x– 2 25

, –2ANSWER –

Prerequisite Skills SKILL CHECK

Evaluate the function when x = –2, 0, and 4.

10. f(x) = x – 10

11. f(x) = 2x + 4

12. f(x) = –5x – 7

0, 4, 12ANSWER

3, –7, –27ANSWER

–12, –10, –6ANSWER