1st Semester Final Exam Review

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.

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

f(x)=2x+1

If f(x)=9, what is the value of x?

• 19

• 2

• 5

• 4

If h(a) = 3 - 2a

Find h(-3).

• 12
• -2
• -3
• 9

Given f(x) = -4x - 10 and f(x) = 10. Find x

• x = -5

• x = 5

• x = -50

• x = 30

Let w(x) = 3x - 7. If w(x) = 14, find x.

• 7
• 35
• 2.33333
• -49

Tags

CCSS.HSF.IF.A.2

Solve:

-2x - 5 = x + 10

• x = -1

• x = 5

• x = -5

• no solution

Solve:

2(x + 5) = 4 - x

• -1/2

• 2

• -2

• no solution

Solve: |x - 3| = 8

• x = 11

• x = 11 and x = -5

• x = -5

• I just can't even with these!

Solve:

2 | x + 4| = 6

• x = -1

• x = 0 and x = -8

• x = 0

• x = -1 and x = -7