Quiz about Linear Modeling

Question 1

Write the equation of the horizontal line that passes through the point (4, 10).

Accepted Answer

y=10

Answer

x=4

Answer

x=10

Answer

y=4

Question 2

Which of the following points is on the line y=3x+2?

Accepted Answer

(1, 5)

Answer

(2, 0)

Answer

(0, 3)

Answer

(3, 2)

Question 3

Find the coordinates of the x-intercept of the line $$y=-\frac{1}{2}x+3$$ .

Accepted Answer

(6, 0)

Answer

(0, 3)

Answer

3

Answer

6

Question 4

An airplane at 33,000 feet begins to descend at a rate of 40 feet per second. Write a linear equation to represent this situation.

Accepted Answer

y=-40x+33000

Answer

y=40x+33000

Answer

y=33000x+40

Answer

y=40x-33000

Question 5

Rewrite in slope-intercept form: $$y-3=\frac{2}{3}\left(x+6\right)$$

Accepted Answer

$$y=\frac{2}{3}x+7$$

Answer

$$y=\frac{2}{3}x+9$$

Answer

$$y=\frac{2}{3}x+1$$

Answer

$$y=\frac{2}{3}x+6$$

Question 6

The velocity of sound in dry air depends on the temperature of the air. At 40 degrees Celsius sound travels at a velocity of about 355 meters per second. At 49 degrees Celsius it travels at a rate of about 360 meters per second. Which of the following ordered pairs represents a point on the linear model?

Accepted Answer

(40, 355)

Answer

(360, 49)

Answer

(355, 360)

Answer

(40, 49)

Linear Modeling

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