Week 4 Finite Math Review

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Question 1

some_text

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Question 2

some_text

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	D.

Question 3

$C:\Users\rlee\Desktop\3.png$

	A.	$C:\Users\rlee\Desktop\a.png$
	B.	$C:\Users\rlee\Desktop\b.png$
	C.	$C:\Users\rlee\Desktop\c.png$
	D.	No solution

Question 4

some_text

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Question 5

$C:\Users\rlee\Desktop\5.png$

	A.	$C:\Users\rlee\Desktop\a.png$
	B.	$C:\Users\rlee\Desktop\b.png$
	C.	$C:\Users\rlee\Desktop\c.png$
	D.	No solution

Question 6

some_text

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Question 7

$C:\Users\rlee\Desktop\7.png$

	A.	$C:\Users\rlee\Desktop\a.png$
	B.	$C:\Users\rlee\Desktop\b.png$
	C.	$C:\Users\rlee\Desktop\c.png$
	D.	$C:\Users\rlee\Desktop\d.png$
	E.	$C:\Users\rlee\Desktop\e.png$

Question 8

some_text

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Question 9

$C:\Users\rlee\Desktop\9.png$

	A.	( 0, 2 )
	B.	( 8, 2 )
	C.	( 4, –6 )
	D.	( –2, 4 )
	E.	( 4, –2 )

Question 10

$C:\Users\rlee\Desktop\10.png$

	A.	( 7, –3 )
	B.	( 6, –2 )
	C.	( 2, –6 )
	D.	( –6, 2 )
	E.	( –7, –2 )

Question 11

$C:\Users\rlee\Desktop\11.png$

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

Question 12

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

(2, 2) and (8, 5)

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Question 13

$C:\Users\rlee\Desktop\13.png$

	A.	$C:\Users\rlee\Desktop\a.png$
	B.	$C:\Users\rlee\Desktop\b.png$
	C.	$C:\Users\rlee\Desktop\c.png$
	D.	infinitely many solutions
	E.	no solution

Question 14

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 15

some_text

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Question 16

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

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	E.	y is not a linear function of x.

Question 17

some_text

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	E.	y is not a linear function of x.

Question 18

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

Question 19

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Question 20

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.

some_text

Question 21

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.

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Question 22

$C:\Users\rlee\Desktop\22.png$

	A.	$C:\Users\rlee\Desktop\a.png$
	B.	$C:\Users\rlee\Desktop\b.png$
	C.	$C:\Users\rlee\Desktop\c.png$
	D.	No solution

Question 23

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Question 24

some_text

	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 25

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