8th Grade MATH STAAR

Front

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? Options: (x y, ) → (x − 4, y + 5), (x y, ) → (x + 4, y − 5), (x y, ) → (x + 4, y − 5), (x y, ) → (x − 4, y − 5)

Back

(x y, ) → (x − 4, y + 5)

Front

Which representation shows y as a function of x?

Back

Front

A bowling ball shaped like a sphere has a diameter of 21.6 centimeters. What is the volume of the bowling ball in cubic centimeters?

Back

5,276.7 cm 3

Front

A customer will borrow $12,000 to buy a car. Which loan option would allow the customer to pay the least amount of interest? Options: A 4-year loan with a 5.2% annual simple interest rate, A 5-year loan with a 4.2% annual simple interest rate, A 6-year loan with a 4.7% annual simple interest rate, A 3-year loan with an 8.4% annual simple interest rate

Back

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

Front

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

Back

Front

Triangle TRW is shown on the coordinate grid. Triangle TRW will be dilated by a scale factor of n with the origin as the center of dilation to create triangle T'R'W'. Which ordered pair best represents the location of point R'? Options: ( 3− n, −5n), ( -3 + n, −5 + n), ( -3 − n, − 5 -n)

Back

( 3− n, −5n)

Front

A student’s parents invested $5,000 in a college savings account that pays 4.85% annual simple interest. No additional deposits or withdrawals will be made. What is the interest earned at the end of 15 years?

Back

$3,637.50

Front

Triangle XYZ is rotated 90° clockwise about the origin to form triangle X Y′ ′Z′. Which statement is true?

• The sum of the angle measures of triangle XYZ is 90° less than the sum of the angle measures of triangle X Y′′′ Z .
• The angle measures of triangle XYZ are less than the corresponding angle measures of triangle X Y′′′ Z .
• Triangle XYZ is not congruent to triangle X Y′′′ Z .
• The area of triangle XYZ is equal to the area of triangle X Y′′′ Z .

Back

The area of triangle XYZ is equal to the area of triangle X Y′′′ Z .

Front

A water tank currently contains 275 gallons of water. The amount of water in the tank will decrease at a constant rate of 15 gallons per week. Which function can be used to find t, the total number of gallons of water in the tank after w weeks? Options: t = 15w − 275, t = −15w + 275, t = 275w − 15, t = −275w + 15

Back

t = −15w + 275

Front

Based on the scatterplot, predict the height in centimeters of a student with a weight of 64 kilograms. Options: 152 cm, 160 cm, 162 cm, 156 cm.

Back

156 cm