Unit 8 Test Corrections

Which statement describes the relationship between x and y in these two equations?

y = x + 8

y = 8x

• In y = 8x and in y = x + 8, the value of y is 8 more than the value of x.

• In y = 8x and in y = x + 8, the value of y is 8 times the value of x.

• In y = 8x the value of y is 8 more than the value of x, and in y = x + 8 the value of y is 8 times the value of x.

• In y = 8x the value of y is 8 times the value of x, and in y = x + 8 the value of y is 8 more than the value of x.

Tags

TEKS.MATH.A.5C

List the dependent quantities in the graph. Choose the correct answer from each drop-down menu to complete the statement.

The dependent quantities in the graph are ​ (a)   ,​ (b)   ,​ (c)   ,​ (d)  

• 40
• 70
• 100
• 130
• 2, 3.5, 5, 6.5

The graph shows the profit earned by a computer store based on the number of computers sold at the store.

Which list shows the independent quantities in the graph?

Gabriela and her mother were born on the same day of the year. The table shows the relationship between g, Gabriela's age, and m, her mother's age.

Which equation represents the relationship between g and m?

• None of these

The cost of 54 tickets to a water park is $972. Each ticket costs the same amount.

Which table or equation represents the relationships between the number of tickets, t, and the total cost of the tickets, c?

Select TWO correct answers

• 
• 

Which graph represents the relationship between x and y in the equation y = 3x?

• 
• 
• 
• 

The cost of 12 donuts is $13.80. Each donut costs the same amount.

Which tables show the relationship between the number of donuts bought and the total cost in dollars?

Select TWO correct answers.

• 
• 
• 
• 
• 

Answer explanation

To find the cost of one donut, divide the total cost of $13.80 by the number of donuts, which is 12. This gives the price per donut. In this case, $13.80 divided by 12 equals the cost of a single donut.

• Quadrant IV

• Quadrant III

• Quadrant II

• Quadrant I

What are the locations of points (4, 3) and (3, −4) on the coordinate grid?

Select TWO correct answers.

Answer explanation

To graph an ordered pair (x, y):

1) Start at the origin (0, 0).

2) Move horizontally to x (right if positive, left if negative).

3) Move vertically to y (up if positive, down if negative).

4) Mark and optionally label the point.

A right triangle and an isosceles triangle are graphed on the coordinate grid. The shaded section represents all the points located inside both triangles.

Which coordinates represent the location of a point inside the shaded section?