Question Bank for Grade 8 Mathematics

Trapezoid WKRP was translated 4 units to the left and 5 units up on a coordinate grid to create trapezoid W'K'R'P'. Which rule describes this transformation?

**To answer this question, you need to know...

• the direction of the x and y axis

• the rotation rules

• the reflection rules

• new over original

Trapezoid WKRP was translated 4 units to the left and 5 units up on a coordinate grid to create trapezoid W'K'R'P'. Which rule describes this transformation?

• (x y, ) → (x − 4, y + 5)

• (x y, ) → (x + 4, y − 5)

• (x y, ) → (x + 4, y − 5)

• (x y, ) → (x − 4, y − 5)

Which representation shows y as a function of x?

**To answer this question, you need to know...

• that x's don't repeat or do the

  vertical line test - it should only cross once

• x's repeat

• the line crosses twice

• what's a function?

Which representation shows y as a function of x?

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A bowling ball shaped like a sphere has a diameter of 21.6 centimeters. Which measurement is closest to the volume of the bowling ball in cubic centimeters?

**To answer this question, you need to know...

• the VOLUME formula for a SPHERE

• the VOLUME formula for a cone

• the SURFACE AREA formula for a sphere

• the AREA formula for a circle

A bowling ball shaped like a sphere has a diameter of 21.6 centimeters. Which measurement is closest to the volume of the bowling ball in cubic centimeters?

• 1,954.3 cm 3

• 5,276.7 cm 3

• 488.6 cm 3

• 42,213.4 cm 3

A customer will borrow $12,000 to buy a car. Which loan option would allow the customer to pay the least amount of interest?

**To answer this question, you need to...

• answer EVERY question and compare

• SKIP this one, because that's doing the most and who has time for all that - thats too many steps. I'd rather come to school in june and july.

A customer will borrow $12,000 to buy a car. Which loan option would allow the customer to pay the least amount of interest?

• A 4-year loan with a 5.2% annual simple interest rate

• A 5-year loan with a 4.2% annual simple interest rate

Which TABLE represents a non-proportional relationship between x and y?

**To answer this question, you need to know that a proportional table is...

• CHANGES: when you divide y/x

• CONSTANT: when you divide y/x

• CHANGES: when you divide x/y

• CONSTANT: when you divide x/y

Which table represents a non-proportional relationship between x and y?

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