Which set of ordered pairs represents y as a function of x?

{(0,0), (-1, -0.5), (-2,-1), (-3,-1.5), (-4,-2)}

{(0,0), (-1,2), (-1,-2), (-2,4), (-2,-4)}

{(0,0), (1,1), (2,4), (3,9), (3,16)}

{(0,0), (0,1), (0,2), (0,-1), (0,-2)}

At a store each notebook has a cost of x dollars. Which situation can be represented by this inequality? 5x<3x+2

The cost of 5 notebooks is less than the cost of 3 notebooks plus a $2 pen.

The cost of 5 notebooks is greater than the cost of 3 notebooks plus a $2 pen.

The cost of 5 notebooks is less than the cost of 3 notebooks with a $2-off coupon.

The cost of 5 notebooks if $2 greater than the price of 3 notebooks.

A polygon is graphed on a coordinate grid with (x,y) representing the location of a certain point on the polygon. The polygon is transformed using the rule (x,y)→(ax,ay). Which statement must be true?

If a is between 0 and 1, the image of the polygon is smaller than the polygon.

If a is greater than 1, the image of the polygon is congruent to the polygon.

If a is between 0 and 1, the image of the polygon is congruent to the polygon.

If a a is greater than 1, the image of the polygon is smaller than the polygon.

Four triangles are shown. One side of each triangle lies on a ray, and the triangles are not drawn to scale. Based on these triangles, which statement about x is true?

x=160, becuase 180-(130+30)=20 and 180-20=160

x=20, because 130+30=160 and 180-160=20

x=80, because 180-130=50 and 50+30=80

x=340. because 130+30=160 and 160+180=340

The digram shows three squares that are joined at vertices to form a right triangle. Which statement is true?

The sum of the areas of Square N and Square L is equal to the area of square K.

The sum of the areas of Square N and Square L is greater than the area of square K.

The sum of the areas of Square N and Square K is equal to the area of square L.

The sum of the areas of Square N and Square K is less than the area of square L.

The scatterplot shows the energy in watts and the light output in lumens per watt of several lightbulbs. Which statement best describes the association between the energy and light output of the lightbulbs?

There is no apparent association between the enrgy and light output.

As the energy increases, the light ouput increases.

As the energy increases, the light output decreases.

As the energy increases, the light ouput remains the same.

8th Grade Math Practice STAAR Test

Authored by Casandra Lopez

Mathematics

8th Grade

CCSS covered

Used 348+ times

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MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Point A

Point B

Point C

Point D

Tags

CCSS.8.NS.A.2

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Tags

CCSS.8.EE.A.3

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Patty, Joe, Steve, Ellen

Ellen, Joe, Steve, Patty

Ellen, Steve, Joe, Patty

Patty, Steve, Joe, Ellen

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Rectangle T, Rectangle S, Rectangle P

Rectangle T, Rectangle P, Rectangle S

Rectangle S, Rectangle T, Rectagnle P

Rectangle S, Rectangle P, Rectangle T

Tags

CCSS.8.NS.A.2

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The slope of line HK is less than the slope of line PK, because the ratio of the change in y-values of the endpoints to then change in x-values of the endpoints is less for line HK than it is for line PK.

The slope of line HK is equal to the slope of line PK, because the ratio of the change in y-values of the endpoints to then change in x-values of the endpoints is the same for line HK as it is for line PK.

The slope of line HK is greater than the slope of line PK, because the ratio of the change in y-values of the endpoints to then change in x-values of the endpoints is greater for line HK than it is for line PK.

The relationship between the slope of line HK and the slope of line PK cannot be determined, because the triangles are congruent.

Tags

CCSS.8.EE.B.6

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Oscar buys his lunch in the school cafeteria. The cost of 15 school lunches. is $33.75. Which graph has a slope that best represents the average cost of the lunches in dollars per lunch?

Tags

CCSS.HSF.LE.B.5

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

A bottle contains 30 fluid ounces of orange juice and 18 fluid ounces of pineapple juice. Which graph has a slope that best represents the ratio of orange juice to pineapple juice in this bottle?

Tags

CCSS.8.EE.B.5

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8th Grade Math Practice STAAR Test

Oscar buys his lunch in the school cafeteria. The cost of 15 school lunches. is $33.75. Which graph has a slope that best represents the average cost of the lunches in dollars per lunch?

A bottle contains 30 fluid ounces of orange juice and 18 fluid ounces of pineapple juice. Which graph has a slope that best represents the ratio of orange juice to pineapple juice in this bottle?

Triangle PSV is shown on the coordinate grid. The coordinates of each vertex of the traingle are integers. What is the slope of line PV?

On a map scale, 2 inches represents 60 miles. Which graph best shows the relationship between x, the number of inches on the map, an y, the actual distance in miles?

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