8th Grade STAAR Review #1 (8.3A 8.3B 8.3C 8.4A)

Triangle RVT and triangle RBS are similar right triangles.

Which proportion represents the slope of the line containing R, S, and T?

A bookshelf contains 15 books that each have the same width. The combined width for all 15 books is 12 inches. Which graph has a slope that best models the width of each book?

• Graph A

• Graph B

• Graph C

• Graph D

A bus travels 25 miles in 30 minutes. Which graph has a slope that best represents the number of miles per minute the bus travels?

• Graph A

• Graph B

• Graph C

• Graph D

Gwen spent $12.50 to purchase 5 bracelets. Each bracelet cost the same amount. Which graph has a slope that best represents this rate?

• Graph A

• Graph B

• Graph C

• Graph D

A student traveled a distance of 68 miles in 136 minutes. Which graph has a slope that best represents this rate?

• Graph A

• Graph B

• Graph C

• Graph D

Quadrilateral KLMN is similar to quadrilateral TUVW. Side lengths are given in centimeters.

Which proportion must be true?

• Each angle measure of quadrilateral L'M'P'Q' will be 3.75 times the corresponding angle measure of quadrilateral LMPQ.

• Each angle measure of quadrilateral L'M'P'Q' will be 3.75 more than the corresponding angle measure of quadrilateral LMPQ.

• Each side length of quadrilateral L'M'P'Q' will be 3.75 times the corresponding side length of quadrilateral LMPQ.

• Each side length of quadrilateral L'M'P'Q' will be 3.75 more than the corresponding side length of quadrilateral LMPQ.

Quadrilateral PQRS is dilated with the origin as the center of dilation to create quadrilateral P'Q'R'S'. The coordinates of each vertex are integers.

Which statement is true?

• Quadrilateral P'Q'R'S' is congruent to quadrilateral PQRS.

• Quadrilateral P'Q'R'S' is similar to quadrilateral PQRS.

A rectangle is graphed on a coordinate plane. The table shows the original vertices and the new vertices after a scale factor with center of dilation at (0,0) is applied.

What rule is applied to the original rectangle to create the new rectangle?