Vocabulary
Writing Linear Functions
Graphing Linear Functions
Slope
Scatter Plots
100
Describe a y-intercept.
The y intercept is the point where the line crosses the y axis. At this point x=0
100
Write a linear function with a slope of -9 and a y-intercept of 5
y =-9x+5
100
Which list contain points that lie on the graph of
y = 2x − 1?
a. (0, -1), (15, 29)
b. (-2, -4), (1, 3)
c. (-2, -3), (0, 0)
d. (2000, 1999), (3, 5)
a. (0, -1), (15, 29)
100
Identify the slope of the linear equation
y = -x + 6
The slope is -1
100
What are the 3 types of correlation?
positive
negative
none
200
What kind of slopes do parallel lines have?
perpendicular lines?
same
opposite reciprocals
200
Write a linear function perpendicular to y=-2x+5 that goes through (4, -3)
y+3=1/2(x-4)
y=1/2x - 5
200
Describe the graph and what the the slope equals for
y=5
horizontal , m= 0
200
Find the slope of a line that passes through the points (0, 5) and (2, 10)
m = 5/2
200
What is the correlation of this graph? 
no correlation
300
Slope Formula
the steepness of a line
300
Write the linear function in this graph:
y=20x-15
300
Rewrite in slope intercept form and then identify the slope and y-intercept.
-5x + 3y = -15
Slope intercept form y = (5/3)x - 5
Slope: 5/3
y-intercept: -5
300
Write the equation in slope-intercept form of the table below.
x 0 -1 2 5 8
y 1 -2 7 16 25
y = 3x + 1
300
Correlation, causation, neither, or both?
The number of homework assignments turned in and how well an individual does in class
correlation and causation
400
What is Slope-Intercept Form, and what does each variable stand for?
=y coordinate
=slope
=x coordinate
=y intercept
400
Write a linear function that passes through the points (0,2) and (4,5).
y= 3/4x +2
400
Explain what the graph of the system would look like then solve the system.
y = 52x + 3
y = 52x - 3
parallel lines
no solution
400
Find the slope of a linear function that contains the points (-2 , 8) and (5 , -13)
-3
400
Correlation, causation, neither, or both?
The age of a child and his/her shoe size.
positive correlation, no causation
500
What is point slope form?
y - y1 = m ( x - x1)
500
Write x-2y=-4 in slope intercept from.
y=0.5x+2
500
Rewrite the equation in slope intercept form.
-2x + 3y = 12
y = 2/3x + 4
500
You are at school, 12 miles away from home. You start walking home with your friends at a speed of 3 miles per hour towards your home.
Write an equation that represents your distance from home (y) after (x) hours.
y = -3x + 12
500
What line is the best line of fit?
C