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Question 1

Find the constants m and b in the linear function f(x) = mx + b so that f(1) = 2 and the straight line represented by f has slope – 1.
 A. B. C. D.

Question 2

 A. B. C. D. No solution

Question 3

 A. x = 16, y = 0, z = 16, t = 0, u = 80, v = 21, w = 61, P = 180 B. x = 0, y = 16, z = 0, t = 0, u = 80, v = 21, w = 61, P = 96 C. x = 80, y = 16, z = 0, t = 0, u = 0, v = 21, w = 61, P = 68 D. x = 80, y = 0, z = 0, t = 16, u = 80, v = 21, w = 61, P = 174

Question 4

 A. B. C. D.

Question 5

 A. B. C. D. No solution

Question 6

 A. B. C. D. No solution

Question 7

 A. B. C. D.

Question 8

 A. B. C. D. E.

Question 9

 A. B. C. D. infinitely many solutions E. no solution

Question 10

Metro Department Store’s annual sales (in millions of dollars) during 5 years were

 Annual Sales, y 5.8 6.1 7.2 8.3 9 Year, x 1 2 3 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. C.

Question 11

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 = 4 C. a = -4 D. a = 8

Question 12

 A. B. C. D.

Question 13

 A. B. C. D. E. y is not a linear function of x.

Question 14

 A. B. C. D. E.

Question 15

Determine whether the equation defines y as a linear function of x. If so, write it in the form y = mx + b. 8x = 5y + 9
 A. B. C. D. E. y is not a linear function of x.

Question 16

 A. ( 0, 2 ) B. ( 8, 2 ) C. ( 4, â€“6 ) D. ( â€“2, 4 ) E. ( 4, â€“2 )

Question 17

 A. The matrix is in row-reduced form. B. The matrix is not in row-reduced form.

Question 18

 A. B. C. D. E.

Question 19

 A. B. C. D. E.

Question 20

Find the slope of the line that passes through the given pair of points.
(2, 2) and (8, 5)
 A. B. C. D. E.

Question 21

 A. ( 7, â€“3 ) B. ( 6, â€“2 ) C. ( 2, â€“6 ) D. ( â€“6, 2 ) E. ( â€“7, â€“2 )

Question 22

 A. B. C. D. E.

Question 23

 A. B. C. D. E.

Question 24

 A. B. C. D. E.

Question 25

Find an equation of the line that passes through the points (1, 4) and ( -7, -4)
 A. y = 7x + 7 B. y = x + 3 C. y = 3x – 7 D. y = 3x – 3