Foundations Final Review

Find the equation of the line that passes through the points:
(-4, -2) and (-3, 5)

• y = ¹/₇ x + 26
• y = 7x + 26
• y = -7x + 26
• y = -7x - 26

Determine the y-intercept from this table.

Two brothers went shopping at a back-to-school sale where all shirts and shorts were the same price. The younger brother spent $175 on 7 new shirts and 7 pairs of shorts. The older brother purchased 6 new shirts and 7 pairs of shorts and paid a total of $165. How much did three shirts cost?

• $10

• $30

• $12

• $25

Tags

CCSS.8.EE.C.8C

• Multiply the top equation by -2 and add the result equation to the bottom equation.

• Multiply the bottom equation by -1 and add the result to the top equation.

• Multiply the top equation by 5 and the bottom equation by 4 and adding the two equations.

• Multiplying the top equation by 2 and the bottom equation by 2 and adding the resulting equations.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• Multiply the top equation by 2 and add the result to the bottom equation.

• Multiply the top equation by -5 and the bottom equation by 4 and add the resulting equations.

• Multiply the top equation by 6 and the bottom equation by 3 and add the resulting equation.

• Multiply the top equation by 3 and add the result to the bottom equation.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Select all that are true.

• A higher standard deviation means higher variability

• A lower standard deviation means lower variability

• A higher standard deviation means lower variability

• A lower standard deviations means higher variability

Which equation do you use to calculate the residual?

• predicted - observed

• run / rise

• observed - predicted

Tags

CCSS.HSS.ID.B.6B

The equation y = 3x + 8 models the amount of snow in inches(y) after x hours.

Interpret the slope,

• 8 inches of snow falls in 3 hours.

• 3 inches of snow falls in 8 hours.

• When we started measuring, there were already 8 inches of snow on the ground.

• Every hour, 3 new inches of snow accumulates.

Tags

CCSS.HSF.LE.B.5

The equation y = 3x + 8 models the amount of snow in inches(y) after x hours.

Interpret the y-intercept

• 8 inches of snow falls in 3 hours.

• 3 inches of snow falls in 8 hours.

• When we started measuring, there were already 8 inches of snow on the ground.

• Every hour, 3 new inches of snow accumulates.

Tags

CCSS.HSF.LE.B.5

Janice is saving money for retirement. The equation y = 500x + 12,000 models her retirement savings where y is the total she has saved in dollars, and x is the number of months.

Interpret the slope.

• Janice saves $12,000 every 500 months

• Janice saves $500 every 12,000 months

• Each month, Janice saves an additional $500

• Each month, Janice saves an additional $12,000