Representing and Interpreting Functions

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

• 6

• 4

• 2

• 1

Tags

CCSS.8.EE.B.5

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

Is this graph a function or not a function? 

• Function

• Not a Function

• A.
• B.
• C.
• D.

Tags

CCSS.8.EE.B.5

Which of the following statements are true about the function g(x)?  Select all that apply.

• The slope of the graph is -2.

• The function g(x) is an exponential function.

• When x increases by1, g(x) decreases by a factor of -2.

• The function can be represented by the equation g(x) = -2x.

• The function can be represented by the equation g(x) = -2x + 5.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The graphs of y = g(x) and y = f(x) are shown.  Place points on the graph that will satisfy each given condition.

* A point on the graph of g where x = 0 ​ (a)  

* A point on the graph of g where f(x) > g(x) ​ (b)   or ​ ​ (c)  

* A point on the graph of f where f(x) = 0 ​ (d)  

• (0,2)

• [-2.5 , -0,5]

• x >3

• (2.5, 0)

• (0,1)

• [-5, 5]

• [-4,0]

The function below can be used to model the height (h, in feet) of a ball t-seconds after it is launched into the air. What is the height of the ball once 5 seconds have passed? h(t) = -16t² + 75t + 80

• 55 feet

• 124 feet

• 375 feet

• 535 feet

​ (a)   ​

• Mapping does not represents y as a function of x.

• Mapping represent y as a function of x

Tags

CCSS.8.F.A.1

Your paycheck is a function of the hours you work. The range for this would represent the ​ (a)   and would be ​ (b)   ​ (c)   .

• real numbers

• greater than zero

• paycheck

• whole numbers

• less than zero

• integers

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1