Find the Constant of Proportionality (CoP) and write the direct variation equation from the table.
k=200
y=200x
Draw an example of a graph that is NOT a direct varitation?
Answers may vary but it MUST break SOS.
Straight line
Origin
Same Ratio
Is the equation proportional or non-proportional? Why or why not?
y=1/2x
Yes it is proportional because it goes through the origin and k=1/2.
Write an equation for this linear relationship.
Emir started out the card game with 500 points. For every hand he won, he gained 100 points
y=100x+500
Find the y-intercept
b=-3 or (0, -3)
Find the y-intercept.
b=70
Use the graph to write its equation in slop intercept form.
y=-4/5x+4
Identify m and b, and write an equation.
The slope is 3
The y-intercept is 2
b=2
y=3x+2
In a direct variation, y=18 and x=2.
Write a direct variation equation that shows the relationship between x and y.
y=9x
Find the y-intercept
b=3 or (0,3)
Yes, because all ratios simplify to k=12.
Use the graph to write an equation.
y=50x
Use the equation to find the y value when x=15.
y=31
Find and Interpret the Constant of Proportionality (CoP).
k=3
3 pages of notes in 1 hour of class OR 3 pages of notes every 1 hour of class.
Find the y-intercept.
b=0 or (0,0)