what is the slope and y-intercept
A car rental company charges $4 per mile plus $3 up front Write the equation and identify the slope and y-intercept
y=4x+3
Slope=4
y-intercept=3
If x=5, evaluate f(x)=x+7
f(5)=12
In an ordered pair which value goes first
X value
h(x)=5x-3
find x when h(x)=-18
x=-3
Find the slope of the line with the points (-16,1) and (-9, 15)
slope=2
y=1/4x - 2
slope=1/4
y-intercept=-2
If x=4, evaluate f(x)=3x
f(4)=12
Why do we write points as (x,y)?
To show horizontal then vertical position.
g(x)=-1/2x-3
find x when g(x)=4
x=-14
What happens if the slope is zero?
The line is horizontal.
If the slope is negative what does that mean about a graph?
The line goes down as it moves to the right.
If x= -2, evaluate f(x) 5x-1
f(-2)=49
In the ordered pair(0,17), what is y?
y=17
What does f(x) mean in words?
The value of the function at x.
Find the slope of a line using the points (-2,5) and (-7,8)
3/-5
y=-x
slope= -1
y-intercept=0
what does the rule of a function tell you?
How to calculate y from x.
Why are ordered pairs important in real life data?
They show a relationship between two quantities.
f(x)=0.5x - 2; find f(5)
0.5
What happens if the slope is undefined.
The line is vertical.
How can you find the slope from a graph
Count rise over run between two points.
What does it mean when x is substituted into a function?
You're finding the output for that specific input.
Identify x and y in (-10,-4).
x=-10, y=-4
f(x)=-3x - 7, find f(2)
-13
Find the slope of a line using the points (4,-2) and (-2, 6)
-4/3