Day 20 - 8th Grade Math - Staar Blitz

Which graph or table shows the proportional relationship described by the function y=−2xy=-2xy=−2x ?

The four answer choices are shown as two coordinate-plane graphs and two tables.

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TEKS.8.5A

Which scatterplot best represents a nonlinear relationship between the x- and y-values?

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TEKS.8.5C

• 75

• 56

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TEKS.8.5E

Which representation best describes a proportional relationship between x and y?

• y = (3/4)x - 6

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• y = x + 4

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TEKS.8.5F

A segment is graphed on the grid. Points will be plotted on the grid with the segment to show y as a function of x. Which ordered pairs can be added to the grid to show y as a function of x? Select TWO correct answers.

• (3, −6)

• (−1, 6)

• (1, −6)

• (0, 2)

• (−2, 4)

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TEKS.8.5G

Which equation represents a proportional relationship between x and y?

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TEKS.8.5H

The table shows several pairs of x- and y-values for a linear relationship. Create an equation in slope-intercept form that can be used to model this relationship.

y = ​ (a)   x + ​ (b)  

• 3/4
• 2
• -2
• -1
• -3/4
• 4/3
• 8

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TEKS.8.5I

A bakery delivers cookies to offices. • The bakery charges a $5 delivery fee. • The bakery charges a total of $20.00 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?

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TEKS.8.5I

A cone has a radius of 12 centimeters and a height of 18 centimeters. What is the volume of the cone in cubic centimeters?

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TEKS.8.7A

A triangular prism and its dimensions in feet are shown. What is the total surface area of the prism in square feet?

• 456 ft²

• 672 ft²

• 768 ft²

• 576 ft²

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TEKS.8.7B