Quiz about STAAR Quizizz 8.4C

Question 1

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

Accepted Answer

$$\frac{4}{3}$$

Answer

$$\frac{3}{2}$$

Answer

$$\frac{4}{5}$$

Answer

$$\frac{5}{3}$$

Question 2

The table shows the linear relationship between the number of hours Francis worked, x. and the amount of money Francis earned, y.

Based on the table, how much did Francis earn per hour?

Accepted Answer

$14.00 per hour

Answer

$17.50 per hour

Answer

$35.00 per hour

Answer

$24.50 per hour

Question 3

A gym charges a membership fee plus an additional fee per yoga class. The table shows the linear relationship between the number of yoga classes taken and the total cost including the membership fee.

Which statement is true?

Accepted Answer

The additional fee per yoga class is $3.75.

Answer

The additional fee per yoga class is $8.25.

Answer

The membership fee is $35.00.

Answer

The membership fee is $42.50.

Question 4

The line graphed on the coordinate grid can be used to determine the number of inches of water added to a swimming pool after different numbers of hours.

Which statement best describes the slope of the graphed line?

Accepted Answer

The water is being added at a rate of 2.40 inch per hour.

Answer

The water is being added at a rate of 0.42 inch per hour.

Answer

The water is being added at a rate of 0.80 inch per hour.

Answer

The water is being added at a rate of 1.25 inch per hour.

Question 5

A linear function is represented on the coordinate grid.

What is the y-intercept of the graph of this function?

Accepted Answer

Answer

Answer

$$-\frac{7}{8}$$

Answer

$$-\frac{8}{7}$$

Question 6

The table shows the number of gallons of gasoline in a car's gas tank after the car has been driven x miles.

When these data are graphed on a coordinate grid, the points all lie on the same line. What are the slope and y-intercept of this line?

Accepted Answer

Slope = $$-\frac{1}{25}$$ , y-intercept = 15

Answer

Slope = $$\frac{1}{25}$$ , y-intercept = 375

Answer

Slope = $$25$$ , y-intercept = 375

Answer

Slope = -25, y-intercept = 15

Question 7

Emily sells greeting cards. The graph models the linear relationship between the number of boxes of cards she sells and her profit.

Which of these best describes the profit Emily makes from selling these cards?

Accepted Answer

$7.50 per box

Answer

$10.00 per box

Answer

$4.00 per 30 boxes

Answer

$3.00 per 4 boxes

STAAR Quizizz 8.4C

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