Function Substitution

Evaluate f(-2) if f(x) = x²+ 3

• -1

• 1

• 7

• -7

Tags

CCSS.HSF.IF.A.2

What is f(1)?

• 1

• 5

• 0

• 4

Tags

CCSS.HSF.IF.A.2

What is x if
f(x) = -2?

• 4

• 0

• 3

• 8

Tags

CCSS.HSF.IF.A.2

Given f(x) = 2x² + 5x - 17, find f(-1). 

• f(-1) = -20

• f(-1) = -24

Tags

CCSS.HSF.IF.A.2

Which choice shows substitution correctly?

• 3x - (-6x +3) = 10

• 3(-6x + 3) - y = 10

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Read each step of the Substitution method for solving a System of Equations. Then, match the result of performing the step with the step.

• (2, 1)

• Step 5: Present the solution as an ordered pair

• y = 5 - 2x

• Step 2: Substitute the expression in the other equation

• x = 2

• Step 4: Substitute the variable's value in the other equation; solve

• -3x + 6(5-2x) = 0

• Step 3: Solve the equation for a value

• 2(2) + y = 5

  y = 1

• Step 1: Solve one equation's variable (expression)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Rewrite the system of equation by dragging the appropriate expression in the blank below.

• y

• x

• 6

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for f(10):
f(10) = -x - 5

• 15

• -5

• -15

• 50

Tags

CCSS.HSF.IF.A.2

What is the value of x in:
f(3) = 2x + 1

• 3

• 2

• 1

• 0

Tags

CCSS.HSF.IF.A.2

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

• Let x = 2

• Let y = 2

Tags

CCSS.HSF.IF.A.2