Slope of a Line

Calculate the slope of the line shown in the coordinate plane.

• 1

• 1/3

• 3

• -1/3

Prove that the slope between points (-2,1.5) and (0,0.5) is the same as the slope between points (-2,1.5) and (2,-0.5)

• Both of the slopes are 1/2.

• Both of the slopes are -2.

• Both of the slopes are -1/2.

• They are not the same.

Find the slope of the line through the points (12,-18), (11,12).

• 1/30

• -30

• 30

• -1/30

Find the slope of the line. 2x+3y=9 (Remember: y=mx+b)

• -2/3

• -3/2

• 2/3

• 3/2

Find the slope of the line.

• 1/3

• -1/3

• -3

• 3

Write an equation if the slope is ¾ and the y-intercept is -4 

• y=3/4+4

• y=-3/4-4

• y=-3/4+4

• y=3/4-4

Two parking garages charge different entrance fees and prices per hour.  Garage A’s prices for parking are shown in the graph below.  Garage B charges a $5 initial fee to enter and then charges an additional $1 for every hour.  Write an equation for the costs of garage A.

• y=2x+1

• y=2x-1

• y=1x+2

• y=-1x+2

Two parking garages charge different entrance fees and prices per hour.  Garage A’s prices for parking are shown in the graph below.  Garage B charges a $5 initial fee to enter and then charges an additional $1 for every hour.  Write an equation for the costs of garage B.

• y=-x+5

• y=x-5

• y=x+5

• y=-x-5

Two parking garages charge different entrance fees and prices per hour.  Garage A’s prices for parking are shown in the graph below.  Garage B charges a $5 initial fee to enter and then charges an additional $1 for every hour.  Determine which garage charges more after 5 hours.

• Garage A

• Garage B

• They are equal.

Which of the following is a true statement?

• The slope and unit rate are always the same for any function.

• The slope and unit rate are never the same for any function.

• The slope and unit rate are always the same for a proportional relationship.

• The slope and unit rate are sometimes the same for a proportional relationship.