Slope from 2 points
What is the slope between (3,5) and (4, 9)?
4
Does this equation represent a direct variation?
2x=y
yes
Which direction(s) is rise?
what variable represents the constant in y=kx
k
How many do you rise if the slope is 3/8?
3
What is the slope between (3,5) and (-2, 9)?
4/-5
What is k? y=1/2x
1/2
Which direction(s) is run?
left or right
What is the constant of variation of y = -9/11x
-9/11
How many do you run if the slope is 7/12?
12
What is the slope between (0,2) and (-4, 2)
0
x| 1 2 3 4
______________________
y| -2 0 2 4
Draw an example of a graph with a negative slope
\
What is the constant of variation of the table
x| 10 12 14 16
________________
y| 5 6 7 8
1/2
Find the slope (-6, 2) and (3, 4)
2/9
What is the slope of a vertical line?
Undefined
Does this equation represent a direct variation?
2y=4x -2
Draw an example of a graph with a positive slope
/
What is another name for the constant of variation?
Slope, unit rate
What kind of slope does a horizontal line have?
zero slope
Find the slope (-7, 4) (-7, 2)
Undefined
What two things must be true for a graph to be a direct variation?
Goes through the origin and is a straight line
|
What is the constant of variation in the equation?
4y=5x
4/5
What is the formula for finding slope?
y2-y1
x2-x1