MTH 208 Week 3 Quiz

MTH 208 Week 3 Quiz

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1.

Consider the following graph. What are the coordinates of point A?

2.

Consider the following graph.

What is the slope of Line ?

3.

Consider the following graph.

What is the y-intercept for Line ?

4.

A line passes through the points and .

What is the slope of the line that passes through the two points?

5.

A line passes through the points and .

What is the y-intercept of the line?

6.

Which line is perpendicular to the line y = x + 4 ?

y = x – 4

y = – x + 4

y = x + 6

y = – x + 6

7.

Which set of points are on the line y = 2x – 3?

{(0, -3), (7, 5)}

{(0, -3), (5, 7)}

{(-3, 0), (7, 5)}

{(-3, 0), (5, 7)}

8.

Consider the following graph:

What is the domain of the function?

[0, 3]

(0, 3)

(0, 9)

[0, 9]

9.

Consider the following graph:

What is the range of the function?

[0, 9]

(0, 9)

[0, 3]

(0, 3)

10.

Consider the following graph:

What are the minimum and maximum x-values of the function?

minimum is 0, maximum is 9

minimum is 0, maximum is 3

minimum is 3, maximum is 9

There are no minimum or maximum x-values.

11.

In a coordinate plane, the points (2,4) and (3,-1) are on a line. Which of the following must be true?

The line rises from the lower left to the upper right.

The line crosses the x-axis.

The line stays above the x-axis at all times.

The line passes through (0,0).

The line is parallel to the y-axis.

12.

Which of the following is an equation of a line that passes through the point (0, 5) and has a negative slope?

y = -5x – 5

y = 5x

y = 5x + 5

y = -5x + 5

y = 5x – 5

13.

A plumber charges customers $48 for each hour worked plus an additional $9 for travel. If h represents the number of hours worked, which of the following expressions could be used to calculate the plumber’s total charge in dollars?

(48 * h) + 9

48 + 9 + h

48 * 9 * h

48 + (9 * h)

(48 * 9) + h

14.

The number of gallons of water, y , in a tank after x hours may be modeled by the linear equation y = 800 – 50x . Which of the following statements about the tank is true?

It is emptying at a rate of 800 gallons per hour.

It is filling at a rate of 50 gallons per hour.

It is filling at a rate of 800 gallons per hour.

It is emptying at a rate of 16 gallons per hour.

It is emptying at a rate of 50 gallons per hour.
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