function notation

Given h(x) = 5 - 9x, find h(8). 

Mathematical Equivalence

ON

For the function f(x) = -3(x-1) find f(0).

• 0
• -3
• 3
• -1

Evaluate f(-5) if f(x) = -2x - 12

• -22
• -2
• -19
• -5

• subtract 8
• divide 7
• x=3
• add 8
• multiply 7
• subtract 7
• x=2
• x=5.2
• x=7
• divide 8

If f(x) = 10, what is the value of x?

f(x) = x + 2

Mathematical Equivalence

ON

Evaluate for f(1)

• 0
• -3
• 3
• 2

If a question asks you to find f(2), what does that mean?

• Let x = 2

• Let y = 2

If I know that f(2) = 4, what is another way I can write my answer?

• 2,4

• (2, 4)

• That is the only way to write it.