Rate of Change
Slope from 2 Points
Find the Missing Value
Slope-Int Form
100
A car accelerates to 30 mph in 180 feet.
What is 1 mph for every 6 feet?
100

(5,1) and (9,9)

What is 2?

100

(2,y) and (0,8) when the slope is -2.

What is y=4?

100

What is the slope of y = 3x + 9

3

200
3 bags of rice cost $6.75 and 5 bags of rice cost $11.25.
What is $2.25 per bag of rice?
200

(2,-3) and (5,-15)

What is -4?

200

(x,6) and (-5,-9) when the slope is 3/2.

What is x=5?

200

What is the y-intercept of 

y=4x+1/2

1/2

300
A swimming pool has 200 gallons of water and then 8 minutes later it has 360 gallons of water.
What is 20 gallons of water per minute?
300
(-2,5) and (4,19)
What is 7/3?
300
(8,-3) and (10,y) when the slope is 5/2.
What is y=2?
300

Write an equation in slope-intercept form that has a slope of 6 and a y-intercept of 7.

y=6x+7

400
Janice has typed 32 words. 2 minutes later she has typed 68 total words.
What is 18 words per minute?
400
(-2,-9) and (-7,-21)
What is 12/5?
400

(1,-1) and (-5,y) when the slope is -4/3.

What is y=7?

400

Write an equation in slope-intecept form that has a y-intercept of 

 2/3 and a slope of 4.

y=4x+2/3

500
An employee earns $28.50 after 3 hours and $237.50 after 25 hours.
What is $9.50 per hour?
500
(42,18) and (21,19)
What is -1/21?
500

(x,-8) and (10,4) when the slope is 3.

What is x=6?

500

Put this equation in slope-intercept form:

3x+y=1

y=-3x+1

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