Math 8 Review #5

Find the slope from the table.

• -4
• 1
• 4
• -2

What is the slope a horizontal line?

• -1
• undefined
• 1
• 0

When Sue bought a candle, it was 10 inches tall. It burns at a rate of 1/4 inches per hour. What is the equation of the line in slope-intercept form?

• y = -1/4x - 10
• y = -1/4x + 10
• y = 1/4x + 10
• y = 1/4x -10

Write the equation for the line in slope-intercept form.

• y= -1x+3
• y= 4x+3
• y=(1/4)x+3
• y= -4x+3

Caitlin won a bag full of money! She has 49 bills in all. She counts $1,430. There are $20 dollar bills and $50 dollar bills. How many of each bill does Caitlin have?
WRITE a system where T= # of $20 and F = # of $50.

• T + F = 1430
  20T + 50F = 49
• T+ F = 49
  10T + 5F = 1430 
• T + F = 49
  20T + 50F  = 1430
• T + F = 49
  T + F = 1430

What is the y-intercept in the function?
y = 5x - 4

• 5
• -4
• -5
• 4

Solve for x and y
2x − 3y = −1
 y = x − 1

• (-2,-3)
• (0,-1)
• (3,4)
• (4,3)

Solve:
8x + 4y = 12
y = -2x + 3

• (0,3)
• (3,0)
• No solution(parallel lines)
• Infinitely many solutions

<6 measures 40°. What is the measurement for <7?

• 50°
• 140°
• 40°
• 0°

Lines l and m are parallel and the measure of angle 1 is 52 degrees, find the measure of angle 8.

• 52 degrees
• 180 degrees
• 128 degrees
• 90 degrees