Functions 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

CCSS.HSF.IF.A.1

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)

Tags

CCSS.8.F.A.1

Is the graph pictured a function?

• Yes
• No

Tags

CCSS.HSA.REI.D.10

CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

Is the graph pictured a function?

• Yes
• No

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

Evaluate f(-4) for the function f(x)=3x²-5

• f(-4) = 43
• f(-4) = 139
• f(-4) = -52
• f(-4) = -149

Tags

CCSS.HSF.IF.A.2

Using the functions f(x)=-4x+11 and g(x)=5x², evaluate g(f(3))

• g(f(3))=-10
• g(f(3))=5
• g(f(3))=-169
• g(f(3))=-5

Tags

CCSS.HSF-BF.A.1C

Using the functions f(x)=-4x+11 and g(x)=5x², evaluate g(-3)*f(4)

• g(-3)*f(4)=5,520
• g(-3)*f(4)=225
• g(-3)*f(4)=-225
• g(-3)*f(4)=-1,125

Tags

CCSS.HSF.IF.A.2

What is the domain of the given function y=5x+10?

• $\left[5,\infty\right]$

• $\left(-\infty,5\right]$

• $\left(-\infty,\infty\right)$

• $\left[-\infty,\infty\right]$

What is the domain of the pictured graph?

• $\left(-\infty,0\right)\cup\left(2,\infty\right)$

• $\left(-\infty,2\right)\cup\left(2,\infty\right)$

• $\left(-\infty,0\right)\cup\left(0,\infty\right)$

• $\left(-\infty,2\right]\cup\left[2,\infty\right]$

Which relation describes a function? What makes it a function?

• {(-2,3),(-2,5),(-6,7)} Each member of the range is unique.

• {(2,3),(3,3),(3,4)} Each member of the domain and range is positive.

• {(2,3),(3,3),(3,4)} Each member of the domain and range is a real number.

• {(-2,3),(-3,3),(-4,3)} Each member of the domain is assigned exactly one member of the range.

Tags

CCSS.8.F.A.1