Slope (Rise over Run)
Vertical and Horizontal line equations
Interpreting graphs
Writing Equations of Graphs
Finding Solutions
100
In the linear equation y = -4/5x + 3, what is the slope?
What is -4/5?
100
Equations for horizontal lines always start with...
y=
100
Which line makes the most sense for the weight of a mouse?
Line D
100
What two values do you need to find when writing a linear equation?
What is the slope and y-intercept?
100
What does it mean when a point is a solution of a linear equation?
The point (ordered pair) will land directly on the line.
200
Find the slope of Graph #1.
What is -4/3?
200
Equations for vertical lines always start with...
x=
200
Which line makes the most sense for the weight of a person?
Line B
200
Write a linear equation for Graph #1.
What is y = -4/3x - 4?
200
Is the point (-2, 1) a solution to the equation y = 2x + 3?
No.
300
What is the slope of Graph #2?
What is -5?
300
Write the equation to the line
y=-4
300
Which mammal would line A represent?
Rhino
300
Write a linear equation for Graph #2.
What is y = -5x or y = -5x + 0?
300
Is the point (-2, -3) a solution to the equation y = -3x - 3?
No.
400
What is the slope of Graph #3?
What is 3/2?
400
Write the equation to the line
x=8
400
What do the y-intercepts represent in this graph?
Weight when born
400
Write a linear equation for Graph #3.
What is y = 3/2x + 2?
400
Is the point (-2, -4) a solution to the equation y = 1/2x - 3?
Yes.
500
What is the slope of Graph #4?
What is -1/4?
500
A horizontal line has a slope of _______
0
500
Johnny bought a phone for $250 and had to pay $50 a month for service.
What is the y-intercept of this situation?
Is it Proportional? How do you know?
the $250 he paid for his phone
No
Does not start at the origin (0,0)
500
Write a linear equation for Graph #4.
What is y = -1/4x + 3?
500
Is the point (-6, -3) a solution to the equation y = -1/3x - 5?
Yes.