Slope and Y-Intercept Review

Which is the graph of y= -x + 2?

• A

• B

• C

• D

What does 'b" represent in y=mx+b

• y-intercept

• equation

• nothing

• slope

Give the equation for the graph

• y = 5x - 3

• y = 4x + 2

• y =-2x + 5

• y = - 2x + 4

Which equation best represents the relationship between x and y in the table shown?

• y= 5x+5

• y=1/5x+5

• y=15x+5

• y=10x+5

Which ordered pair could represent a y-intercept on a graph?

• (6, 0)

• (0, 4)

• (-1, 3)

• (2, 0)

A fitness club opens with 80 members. Each month the membership increases by 15 members. Which equation represents the relationship between the number of months the club has been opened, x, and the total fitness club membership, y?

• y=15x

• y=15x+80

• y=x+15

• y=80x+15

Identify the slope, y-intercept, and whether the line is increasing or decreasing. 

• Slope = 2
  Y-int = (0, -2/3)
  Increasing

• Slope = -2/3
  Y-int = (2, 0)
  Decreasing

• Slope = -2/3
  Y-int = (0, 2)
  Decreasing

• Slope = -2/3
  Y-int = (2, 0)
  Decreasing

Identify the slope, y-intercept, and whether the line is increasing or decreasing.

• Slope = -9
  Y-int = (0, 2)
  Decreasing

• Slope = -9
  Y-int = (0, 2)
  Increasing

• Slope = 9
  Y-int = (0, 2)
  Decreasing

• Slope = 2
  Y-int = (0, -9)
  Increasing

Which situation can be represented by
y = 17x - 8?

• The number of seeds, y, needed to feed 8 hamsters 17 seeds each.

• The earnings from a lemonade stand, y, selling glasses at 17 dollars each with $8 in the tip jar.

• The cost, y, of buying 17 movie tickets that sell for $8 each. 

• The cost, y, of buying Star Wars figurines at $17 each with an $8 discount. 

Identify the slope, y-intercept, and whether the line is increasing or decreasing. 

• Slope = -1/4
  Y-int = (0, 8)
  Increasing

• Slope = 1/4
  Y-int = (0, 8)
  Decreasing

• Slope = 1/4
  Y-int = (0, 8)
  Increasing

• Slope = 8
  Y-int = (0, 1/4)
  Increasing