Unit 1 Test Review

Does this mapping diagram represent a function?

• No, because an input value goes to multiple output values
• Yes, because each input goes to one and only one output

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)

What is the domain of the graph?

• {-4, 0, 2, 4}
• {-5, -4, -3, -1}
• {-5, -4, -3, -1, 0, 2, 4}
• All real numbers

8y + 12 - 2z
for y = 4 and z = 2

• 40
• 20
• 84
• 34

Evaluate the expression 2p - (p + 3) ÷ 3. For p = 6

• 1

• 3

• 5

• 9

-2m - 5(2 + 7m)

• -37m - 10

• 33m -10

• 33m + 10

• -37m - 5

Solve for k:

38 + 7k = 8(k + 4)

• k = 6

• k = 8

• k = -6

• k = 1

Write the following in interval notation

x < 8

• [8, ∞)

• (8, -∞)

• (-∞, 8]

• (-∞, 8)

• [0, 3]

• (0, 3)

• [0, 3)

• (0, 3]