Linear And Quadratic Functions Worksheet With Answers Page 3
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Sample Questions
4.1 #29. Solve f (x) ≤ g(x) for f (x) = 4x
1 and g(x) =
2x + 5.
(a) ( ∞, 2)
(d) ( ∞, 1]
(b) ( ∞, 2]
(e) None of these
(c) ( ∞, 1)
4.1 #37c. The cost (in dollars) of renting a truck is C(x) = 0.25x+35, where x is the number
of miles driven. If you want the cost to be no more than $100, what is the maximum number
of miles you can drive?
(a) 60
(d) 540
(b) 260
(e) None of these
(c) 400
4.3 A. If f (x) is a quadratic function whose graph has the vertex (h, k), which one is the
correct form of the function?
2
2
(a) f (x) = a(x
h) + k
(d) f (x) =
r
(x
h)
+ k
2
3
(b) f (x) = a(x
+ k
(e) f (x) = a(x
+ h
h)
k)
2
(c) f (x) = a(x
+ h
k)
2
4.3 #42 If f (x) = x
2x
3, then the vertex of the graph of f (x) is
(a) (-2,5)
(d) (2, 3)
(b) (-1,0)
(e) None of these
(c) (1,-4)
2
4.3 B. Find the vertex of the quadratic function f (x) = 2x
4x + 9.
(a) (0, 9)
(d) (1, 7)
(b) (1, 1)
(e) None of these
(c) ( 1, 7)
2
4.3 C. Find the axis of symmetry of the graph of f (x) = 4x
8x + 3.
(a) x = 1
(d) x =
2
(b) x =
1
(e) None of these
(c) x = 2
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