Slope
What is the slope of y=-2x+3
-2
What is the y-intercept for this equation? y=-x+3
3
How do you find slope?
rise over run, height over right, or change in y over change in x
When you're not given a y-intercept, what number will you use?
0
What is the rise and run from this slope? 5/2
Up 5 over 2 to the right.
Identify the slope in this equation: y= 5x+2
5
Identify the y-intercept in this equation: y=-2/3x+1/5
1/5
What is the letter associated with the y-intercept in slope intercept form?
b
What is the slope of a horizontal line?
0
Describe rise over run:
A fraction consists of the rise (the change in y, going up or down) divided by the run (the change in x, going from left to the right).
What is the slope of y=-8x+6
-8
What is the definition for Y-intercept?
the point where the graph crosses the y -axis.
What operation does "of" indicate?
multiplication
What is it called when a line is not straight on the graph?
Non-linear
What is the run from this slope? 6/4
4
Find the slope from these ordered pairs: (-2,-1) and (-4,-7)
3
What is the y-intercept from this equation? y=-3x+8
8
When might slope be used in a real-world situation?
Examples might include: when building stairs and ramps of any kind or calculating the steepness of a roof or playground slide
(Teacher's discretion)
Define slope-intercept form:
the equation of a straight line in the form y = mx + b where m is the slope of the line and b is its y-intercept.
What is the rise and the run of 2/1?
Rise is 2
Run is 1
Find the slope from these ordered pairs: (-4, 2) and (-6, 1)
1/2
Is the y-intercept in this equation positive or negative? y=4/5x-1
negative
Jim weights 210 pounds and loses 5 pounds per week.
M=
B=
Y=
(You must get all 3 for the points)
M=-5
B=210
Y=-5x+210
Define slope formula:
Slope = Change in y Change in x, rise over run, height over right
Find the rise over run of these 2 slopes: 1: 9/3 and 2:6/3
(You must get all 4 correct to get points)
1. rise:9
run:3
2. rise:6
run:3