Function Vocab
Evaluating Function Rules
Function Stories
Mixed Review
Is it a Function?
100
The x variable is also known as the __________ and __________ variable.
What is the input and independent variable.
100
What is the output when the input is 2?
y=-3x
What is -6
100
Write the function equation to represent the story:
Jake makes $15 an hour tutoring math.
What is y = 15x
100
What is the y-intercept of this function?
y = 3x + 60
What is a starting value of 60
100
Is it a function? {(2, 3), (4, 5), ( -2, 6)}
What is YES because x does not repeat. Showing that each input has one unique output.
200
The y variable is also known as the __________ and __________ variable.
What is the output and dependent variable.
200
What is the output when the input is -2?
y=2x+1
What is -3
200
Write the function equation to represent the story:
Tom got in a car accident. It costs him a fixed amount of $500 plus an additional amount of $30 per hour for the repair.
What is y = 30x + 500
200
What is the rate of change of this function?
y = -4x - 18
What is -4
200
Using the vertical line test does the graph of the points (1,3) and (1,5) represent a function?
What is False, the points fail the vertical line test, showing that the input of 1 has MORE THAN ONE output, 3 and 5.
300
A mathematical expression that allows you to find the output.
What is the function rule.
300
What is the output when the input is 6?
y= -3 - x
What is -9
300
Write the function equation to represent the story:
Danielle gets on the freeway at a speed of 40 miles per hour, then increases her speed at a constant rate of 5 miles per hour until she reaches the speed limit.
What is y = 5x + 40
300
What is the y-intercept of this function?
x, y
(0,3)
(1,5)
(2,7)
(3,9)
What is a y-intercept of 3
300
Does the table represent a function?
| x | y |
| 2 | 4 |
| 1 | 5 |
| 2 | 6 |
What is NO because the x of 2 repeats with MORE THAN ONE output, 4 and 6.
400
A math rule or expression that assigns exactly one output for each input.
What is a function.
400
What is the input if the output is 45?
y=25 + 4x
What is 5
400
Write the function equation to represent the story:
Heath drove on the toll road to get to her dentist appointment. The toll charges an initial fee of $5 to access the road and an additional $2.50 for every mile traveled.
What is y = 2.50x +5
400
What is the slope of this function?
x, y
(0,3)
(1,5)
(2,7)
(3,9)
What is a slope of -2
400
Is it a function?
What is YES because it passes the Vertical Line Test, showing that each input is only paired with one output.
500
The __________ is a function of the ____________.
The output (y) is a function of the input (x).
500
What is the input if the output is -30?
y= -(4x+2)
What is 7
500
Write the function equation to represent the story:
Mrs. Gould begins weighing 115 pounds before pregnancy and gains 1 pound each week in the third trimester.
What is y = 1x + 115
500
Which function is increasing at a faster rate?
A) y = 8x -10
B) y = 5x + 25
What is function A, a slope of 8 is greater than a slope of 5
500
Is it a function? 
What is NO because it does not pass the Vertical Line Test, showing an input has MORE THAN ONE output.