Functions #1

Is this mapping a function or not a function? 

• Function
• Not a Function

Is this mapping a function or not a function? 

• Function
• Not a Function 

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)}

y = 2x + 3
What is y when
x = 2?

• 6
• 7
• 4
• 10

y = 10x
What is y when 
x = 3?

• 13
• 3
• 20
• 30

If the input of the function is 2, what is the output when

y = 2x

• 4

• 2

• 0

• 6

Using the table, what is the output value when the input is 0?

• 5

• 3

• 4

• 7

Find the slope of the line.

• -2
• 2
• -1
• 1

Tags

CCSS.8.EE.B.5

What is the slope of the following equation?
y=-2x-1

• 2
• -2
• -1
• 1

Tags

CCSS.8.EE.B.5

y = 1/2x - 1

• slope: 1/2   y-intercept:  -1 
• slope: 2/1   y-intercept:  -1
• slope: 3   y-intercept:  -3 
• slope: 2  y-intercept:  5 

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3