Unit 5 8th grade Math Review

Talk time Phone Company charges $0.12 per minute of phone use plus a monthly service fee of $8.00 for its phone service.  Which equation below can be used to find c, the total cost for one month when m, minutes are used?

• c = 0.12m + 8m
• c = 8m + 0.12m
• c = 0.12m + 8
• c = 0.20m

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Find the equation of the line through:
(-2, 3) and (2, 11).

• y=2x+7
• y=2x+1
• y=(1/2)x+4
• y=(1/2)x-2

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 
• As the temperature increases, the number of visitors increases. 
• As the visitors increase, the temperature decreases. 
• No correlation

A man is climbing down from 100 feet high descending 30 feet per minute.

• y = -30x +100

• y = 100 + 30x

• y = 100x + 30

• y = 100x - 30

What is happening in this graph from point A to B?

• The object is accelerating.
• The object is not moving.
• The object is decelerating.
• The object is moving at a constant speed.

Tags

CCSS.HSF.IF.B.4

What is happening in this graph from point B to C?

• The object is going down a hill.
• The object is returning to its starting location.
• The object is slowing down.
• The object is staying still.

Tags

CCSS.HSF.IF.B.4

The graph shows Ashley riding her bike to Maria's house. 
What is occurring from point A to point B?

• they are traveling at a constant speed
• they are decreasing in speed
• they stopped to take a break

Tags

CCSS.HSF.IF.B.4

Write an equation for the data in the table in slope intercept form.

• y = -4x + 6

• y = x + 4

• y = 4x + 6

• y = 6x + 4

A camp charges families a fee of $625 per month for one child and a certain amount more per month for each additional child. Use the graph to write an equation in slope-intercept form to represent the amount a family with x additional children would pay.

• y = 625x + 225
• y = 225x 
• y = 225x + 625
• y =  625

Tags

CCSS.8.EE.B.5

Who has the greater rate of change?

• CJ has a greater rate of change with 13/2
• Holland has a greater rate of change with 6
• CJ has a greater rate of change with 2/13
• They have the same rate of change.

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9