Math Chapter Functions

What is the solution to this system of equations?

y = 8+ x

y=2x - 2

• (0,8)

• (5,13)

• (6, 14)

• (10,18)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which system of equations represents this situation?

• a + b = 535; 25a + 40b = 16

• a + 25b = 16; 40a + b = 535

• a + 40b = 535; 25a + b = 16

• a + b = 16; 25a + 40b = 535

Tags

CCSS.HSA.CED.A.3

Determine if Circle 2 represents a direct variation.

• Yes

• No

• Sometimes

Is the relation a function? Why?

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

Tags

CCSS.8.F.A.1

Identify the domain of the following relation:

• -6, 14, 2, 28

• (-6,14), (0,32), (2,38), (4,44)

• -6, 0, 2, 4

• 14, 32, 38, 44

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Given f(x) = 2x and
g(x) = x²+3 , find f(g(x)).

• x²+2x+3

• 4x²+3

• 2x²+3

• 2x²+6

Tags

CCSS.HSF-BF.A.1C

Given f(x)= -3x+7 and g(x)=2x² - 8, find f(g(x)).

• f(g(x))= -6x²+31

• f(g(x))= -6x²+24

• f(g(x))=18x²-84x+6

• f(g(x))=9x²-42x-1

Tags

CCSS.HSF-BF.A.1C

f(x) = 3x + 10
g(x) = x - 2
Find g(f(-10))

• -42

• -26

• -18

• None of these.

Tags

CCSS.HSF-BF.A.1C

f(x) = 3x + 10
g(x) = x - 2
Find (f∘g)(0)

• 16

• 4

• -4

• None of these.

Tags

CCSS.HSF-BF.A.1C

Given f(x) = 3x + 10
and g(x) = x - 2
Find f(g(5))

• 19

• 23

• -10

• None of these.

Tags

CCSS.HSF-BF.A.1C