Is it a Function
Is graph #1 a function
Yes, vertical line test
Does Graph #1 have a constant rate of change
No, the domain does not increase by the same amount.
Given the function f(x) = -x + 15, what is the value of f(x) when x = -5?
f(x) = 20
Is graph #2 a function?
No, the 2 repeats in the domain
Does graph #2 have a constant rate of change?
Yes, it is a straight line.
What is the range of the following linear function when the domain is (-3, 0, 3)
y = 2x + 5 ;
(-1, 5, 11)
Is graph #3 a function?
No, because of the vertical line test, the line passes through the graph twice (means x repeats) .
is Graph #2 proportional?
No, it does not go through the origin.
Determine a relationship between the x and f(x) values from graph #1. Write an equation.
3x - 5 = f(x)
Is the set of ordered pairs a function?
(0,3) (1,6) (2,9) (3,9)
Yes, it is a function
What is the constant rate of change in graph #3.
$6 for every 2 notebooks; 6/2
Is graph #5 a function?
No, the 2 in the domain repeats.
Describe the constant rate of change in graph #4
1 gallon of gas is used for each additional 10 miles flown.
-1 gallons/10 miles