Linear Functions
Intercepts
Slope
More Slope
More Linear Functions
100
What is the shape of the graph of a linear function?
Linear functions are those whose graph is a straight line.
100
What is the y-intercept of the following graph?
y-intercept: -2
100
What type of slope rises left to right?
positive
100
What is the formula used to find Slope?
100
True or False:
y = x2 + 4 is a linear function.
False
200
What is an x-intercept?
The point where a line crosses the x-axis.
200
TRUE or FALSE
A line with a slope that is undefined has a y-intercept
FALSE...it does not go through the y-axis
200
Find the slope of the graph. 
m = -3/2
200
Find the slope of a line that passes through the points (0, 5) and (2, 10)
m = 5/2
200
True or False:
The slope of a vertical line is zero.
False. The slope of a vertical line is undefined.
300
Linear Function or Not?
x -1 2 5 2
y -2 7 16 25
Not a Linear Function
300
What are the x and y-intercepts of the linear function
12x – 6y = –36
x-intercept:(-3,0)
y-intercept: (0,6)
300
What is the slope of this graph?
m = 2/3
300
What is the slope of a horizontal line
0
300
Linear Function or Not?
x 0 3 6
y -1 0 1
Linear Function
400
What is standard form?
Ax + By = C
400
What are the x and y-intercepts of the linear function:
-x = 3y - 18
x-int: (18, 0)
y-int: (0, 6)
400
Find the rate of change:
m = $54/6 hour or $9/1 hour
400
Draw a slope that is undefined.
Vertical line
400
The "A" value in Ax + By = C can NOT be what two things?
negative and a fraction
500
What is a y intercept?
The point on a graph where the line crosses the y axis.
500
When graphing intercepts, the equation must be in _____________ form
Standard
500
Find the rate of change:
m = 75 miles/5 gal OR 15 miles/1 gal
500
Find the slope of a line that passes through (-2, -1) and (7, -3)
m = -2/9
500
True or False: When graphing lines in Standard Form, you must know the slope.
False. You must use the x and y intercepts.