17. What is the vertex of a quadratic function y = x2 -3x - 10? 49 a) (-) b) () e) (--) 49 3

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.6: Quadratic Functions
Problem 57E
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17. What is the vertex of a quadratic function y = x2 - 3x - 10?
a) (-)
49 3
b) (*)
49
o) (--)
49
|
-
4
4
18. Find the quadratic function from the table of values below.
-5
-4
-3
-2
-1
-6
-1
2
3
-1
-6
a) y = 2x2 + 4x – 1
b) y = -x2 + 4x – 1
c) y = -x2 – 4x – 1
d) y = -2x2 – 4x – 1
%3D
19. What happen to T when h is doubled in the equation T= 4h?
b) T is halved
a) T is doubled
c) T' is tripled
d) T becomes zero
20. The number of days needed in repairing a house varies inversely as the number of men
working. It takes 15 days for 2 men to repair the house. How many men are needed to
complete the job in 6 days?
a) 5 men
b) 6 men
c) 15 men
d) 20 men
Transcribed Image Text:17. What is the vertex of a quadratic function y = x2 - 3x - 10? a) (-) 49 3 b) (*) 49 o) (--) 49 | - 4 4 18. Find the quadratic function from the table of values below. -5 -4 -3 -2 -1 -6 -1 2 3 -1 -6 a) y = 2x2 + 4x – 1 b) y = -x2 + 4x – 1 c) y = -x2 – 4x – 1 d) y = -2x2 – 4x – 1 %3D 19. What happen to T when h is doubled in the equation T= 4h? b) T is halved a) T is doubled c) T' is tripled d) T becomes zero 20. The number of days needed in repairing a house varies inversely as the number of men working. It takes 15 days for 2 men to repair the house. How many men are needed to complete the job in 6 days? a) 5 men b) 6 men c) 15 men d) 20 men
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