Exploring Function Notation and Linear Functions

What is the first step in the description method for finding f(-9) when f(x) = 2x - 3?

• Add 3

• Subtract 3

• Multiply by 2

• Pick a number

Using the description method, what is the result of 2 * -9 when finding f(-9) for f(x) = 2x - 3?

• -21

• -18

• 21

• 18

In the substitution method, what do you replace x with to find f(-9) for f(x) = 2x - 3?

• -9

• 9

• -3

• 3

What is the final result of f(-9) for f(x) = 2x - 3 using either method?

• 18

• 21

• -18

• -21

What is the first step in the description method for finding g(4) when g(x) = -2x + 3?

• Multiply by -2

• Add 3

• Subtract 3

• Pick a number

Using the description method, what is the result of -2 * 4 when finding g(4) for g(x) = -2x + 3?

• -5

• 8

• -8

• 5

In the substitution method, what do you replace x with to find g(4) for g(x) = -2x + 3?

• 2

• -2

• 4

• -4

What is the final result of g(4) for g(x) = -2x + 3 using either method?

• -8

• 5

• 8

• -5

What is the first step in the description method for finding h(-3) when h(x) = -x - 5?

• Add 5

• Pick a number

• Subtract 5

• Multiply by -1

What is the final result of h(-3) for h(x) = -x - 5 using either method?

• -2

• 2

• 8

• -8