A quick end-of-class check. Two tickets print on each page; cut along the dashed line. The answer key prints on its own page after it.

Exit Ticket: Slope and y = mx + b

Grade 8 · CCSS 8.EE.B.6

Name

1. The ball is at (0, 1). The goal is at (3, −5). Write the equation of the shot.

y =

2. Name the slope and y-intercept of y = 4x − 2.

m = b =

3. Is y = 5x a proportional relationship? How do you know?

Yes / No

Answer Key: Exit Ticket

Slope and y = mx + b

b = 1, m = (−5 − 1) / 3 = −2 → y = −2x + 1
m = 4, b = −2
Yes. b = 0, so the line goes through the origin, and y is always 5 times x.

Quick read: y = −2x − 5 on #1 means the student used the goal's y-value as b; y = −(1/2)x + 1 means run over rise. Try Proportional mode on Easy with them.