8th Grade math STAAR Review: Day 1

A printing store used 24 ounces of ink in 18 minutes. Which graph has a slope that best represents the average number of ounces of ink used per minute?

• 
• 
• 
• 

An artist started with some paint bottles. The artist buys the same number of additional bottles each week. The table shows the linear relationship between x, the number of weeks, and y, the number of bottles that the artist has.

How many bottles did the artist have at the start?

• 3

• 9

• 13

• 15

The graph of a linear function is shown on the coordinate grid. What is the y-intercept of the graph of this function?

• 75

• 56

Which graph does NOT represent y as a function of x?

• 
• 
• 
• 

Which mapping represents y as a function of x?

• 
• 
• 
• 

A bakery delivers cookies to offices.

• - The bakery charges a $5 delivery fee.

• - The bakery charges a total of $20 for delivering 12 cookies

• - The bakery charges a total of $27.50 for delivering 18 cookies.

Which equation represents the total charge in dollars, y, for a delivery of x cookies?

• y = 1.25x + 5

• y = 5x + 1.25

• y = 1.25x + 6

• y = 5x + 7.50

What is the solution to this equation?

2x + 3 = x - 4

The side lengths in yards of a triangle and a squre are shown in the diagram. The perimeter of the triangle is equal to the perimeter of the square. What is the value of x?

• -4

• 6