EOG Math 8 Review-Functions

What is an equation for the line that passes through the points (−2, 3) and (2, 1)?

• y = -0.5x + 2

• y = 0.5x + 2

• y = -0.5x + 1

• y = 0.5x - 1

The graph below shows Calvin’s distance from home throughout the day on Friday. He spent about 7 hours at school, 1 hour at a friend’s house, and about 30 minutes at a store.

Which section of the graph most likely represents Calvin spending time at a friend’s

house?

• P

• Q

• S

• U

In which choice are all four points on the same straight line?

• (-4, 4), (-2, -2), (2, -1), (3, -2)

• (-3, -6), (-2, -3), (0, -4), (3, -4)

• (2, 1), (0, 0), (-1, 1), (-2, -3)

• (-7, -3), (-4, 0), (0, 4), (3, 7)

Greg walked to the store and then returned home. This graph shows the distance Greg was from his house at different times during his walk.

• Greg was at the store for 20 minutes.

• Greg walked to the store at a slower rate than he walked home from the store.

• Greg walked home from the store at the same rate he walked to the store.

• Greg walked home from the store at a slower rate than he walked to the store.

Which choice is an equation for the line graphed below?

• y = 1/2x

• y = 1/2x + 2

• y = 2x

• y = 2x + 2

For which set of values is y a function of x?

• A.

• B.

• C.

• D.

Two companies build houses. • Company M builds half as many brick houses as wood houses. • The table below shows the relationship between the number of brick houses and wood houses that Company N builds. | Wood Houses | Brick Houses | |-------------|--------------| | 5 | 3 | | 10 | 6 | | 15 | 9 | | 20 | 12 | Each company built 100 wood houses. How many more brick houses did Company N build than Company M?

• 0

• 10

• 50

• 60

For which set of points is y a function of x?

• {(−3, 3), (1, 3), (3, −3), (3, 1)}

• {(−3, 3), (−2, 2), (−1, 1), (1, −1)}

• {(−4, −2), (−2, −1), (2, 4), (2, −3)}

• {(−3, −1), (−3, −3), (−3, −5), (0, 3)}

Which equation is graphed below?

• x = 3

• y = 3

• y = 3x

• y = 3x + 1

During which part of the graph was Macy visiting her uncle?

• I

• II

• III

• IV