Write the equation.
What is 3 less than 7 times a number?
f(x)=7x-3
100
Which of the following is NOT a function?
A) (-1,6), (1, 6), (5,-4)
B) (5,-4), (-5,4), (-5,5)
C) (5,-5), (-5,5), (2,5)
B) (5, -4) (-5, 4) (-5, 5)
100
What is the range of the function f(x)=2x-6 when the domain is {-3,3}?
{-12,0}
100
The cable company charges $29.95 per month for basic cable, plus $5 per month for each additional premium channel ordered. What quantity would be represented by the dependent variable in a function that models this situation?
A) the number of premium channels ordered
B) the monthly charge for basic cable
C) the total monthly charge
D)The number of months of cable service ordered
C) the total monthly charge
100
What is the y-intercept of the equation f(x)=2x-9
-9
200
Write the equation.
What is 6 more than 2 times a number?
f(x)=2x+6
200
What is the NAME of the test you can use on a graph to check if it is a function?
Vertical Line Test
200
What is the range of the function f(j)=9-6j when the domain is {-1,0,4,6}
{-27,-15,3,9}
200
In the function f(t)=3t-6 what is the independent variable?
t
200
What is the slope of the function f(x)=4x-2
4
300
Which of the following functions expresses this relationship?
g is a function of x, and 2 more than the product of 3 and x equals g
A) g(x)= 3x+2
B) g(x)= 6x
C) g(x)= 2x+3
D) g(x)= 2-3x
A) g(x)= 3x+2
300
Which relation is a function?
A) (-2,1), (0,1), (1,-2), (3,4)
B) (-1, 5), (-2,3), (-2,1), (-3,-1)
C) (12,36), (9,27), (-6, 30), (9,18)
A) (-2,1), (0,1), (1,-2), (3,4)
300
What is the range of the function f(k)=k^2 when the domain is {-3,-1,6,8}
{1,9,36,64}
300
A DJ charges $300 to provide 4 hours of entertainment at an event. He charges $60 for each additional hour beyond the initial 4 hours. What quantity would be represented by the dependent variable in a function that models this situation?
A) The number of hours the DJ plays
B) The total cost of the DJ's services
C) The number of additional hours requested
D) The cost for 4 hours of entertainment
B) The total cost of the DJ's services
300
What is the slope of the line that passes through the points (-4,5) and (-1,7)?
2/3
400
Write the equation.
What is 4 less than 9 times a number?
f(x)=9x-4
400
Which relation is a function?
A) (1,0), (5,2), (10,3), (10,-3)
B) (3,7), (5,8), (6,9), (5,11)
C) (1,2), (21,2), (2,8), (-2,8)
C) (1,2), (21,2), (2,8), (-2,8)
400
What is the range of the function f(x)=6x+1 when the domain is {-5,10}?
{-29,61}
400
The total cost of parking in a garage is a function of the number of hours a car is parked there. What is the independent variable?
the number of hours
500
Which of the following functions expresses this relationship?
h is a function of n, and the product of 6 and the difference between n and 5 equals h.
A) h(n)=30n
B) h(n)=6-5n
C) h(n)=6(n-5)
D) h(n)=6n-5
C) h(n)=6(n-5)
500
If you see a straight line on a graph and it intersects with both the Y and X-Axis, is it a function? Explain.
Yes, because it does not have repeating x-values and you can use the vertical line test to prove it.
500
In the function f(x)=4x the input represents the number of coupons used at the grocery store and the output represents how much money in total is saved. If you went to the store with 20 coupons, what would be the range for this equation?
In other words what is the least money you could save and the most you could save?
D: (0,20)
R: (0,80)
500
Hudson is 100 miles from his home when he begins driving home at a constant rate of 20 miles per hour. The function y=100-20x can be used to represent this situation. What is the independent variable?