Pre-Algebra DIA 3 Review

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Tags

CCSS.8.F.A.1

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.

Tags

CCSS.8.F.A.1

Which set of ordered pairs 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)}

Tags

CCSS.8.F.A.1

Does the table show a function?

• Function
• Not a Function

Tags

CCSS.8.F.A.1

Does the mapping of these points represent a function?

• Function
• Not a Function

Tags

CCSS.8.F.A.1

• Function
• Not a Function

Tags

CCSS.8.F.A.1

Which equation represents y as a linear function of x?

• y=8x

• x=5

• y=4x²

• y=x³

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which equations represents y as a linear function of x? (HINT: THERE ARE 2 ANSWERS!)

• y=x³

• y=9x

• x=5

• y=x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which equations describe a nonlinear function? Select all that apply. (HINT: LOOK AT THE EXPONENTS! IF IT'S NOT AN INVISIBLE 1, IT'S NONLINEAR!)

• x - 3y=12

• y=x³

• 3y=x

• y=5x²+6x

• 4x+3y²=24

Tags

CCSS.8.F.A.3

which equation has the greater rate of change

• y=2x+3

• y=1/2x +4

• same rate of change

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9