Ma170 Quiz

3/9/2014

W1 Quiz

Points Awarded Points Missed Percentage 1.

72.00 28.00 72.0%

Metro Department Store's annual sales (in millions of dollars) during 5 years were Annual Sales, y Year, x 5.8 1 6.1 2 7.2 3 8.3 9 4 5

Plot the annual sales (y) versus the year (x) and draw a straight line L through the points corresponding to the first and fifth years and derive an equation of the line L. A)

B)

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W1 Quiz

C)

Points Earned:

4.0/4.0

Correct Answer(s): B

2.

Find the slope of the line shown in the figure.

A) B) C) D)

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W1 Quiz

E) Not defined Points Earned: 4.0/4.0

Correct Answer(s): E

3.

Find the slope of the line that passes through the given pair of points. (-1, 2) and (3, 4)

A) B) C) D) Points Earned: 4.0/4.0

Correct Answer(s): D

4.

Find the slope of the line that passes through the given pair of points. (2, 2) and (8, 5)

A) B) C) D) E) Points Earned: 4.0/4.0

Correct Answer(s): E

5.

Find the slope of the line that passes through the pair of points.

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W1 Quiz

and

A) B) C) D) E) Points Earned: 4.0/4.0

Correct Answer(s): A

6. Determine whether the lines through the given pairs of points are parallel. A (2, - 3), B (- 2, - 11) and C (1, 2), D (- 1, 6) A) The lines through the given pairs of points are not parallel. B) The lines through the given pairs of points are parallel. Points Earned: 4.0/4.0

Correct Answer(s): A

7. If the line passing through the points (2, a) and (5, - 3) is parallel to the line passing through the points (4, 8) and (- 5, a + 1) , what is the value of a? A) a = -8 B) a =...