How do you find the rate of change of a graph?
rise over run (change in y over change in x)
How do you find the rate of change of a table?
identify which side is x and y, find change in y, put it over change in x
How do you find the rate of change of coordinate points?

What is the slope-intercept form for a linear equation? What variable is slope? What variable is y-intercept?
y = mx + b
m = slope
b = y-intercept
Draw a scatter plot with positive, linear association
Find the slope of this graph!

-2/1 or -2
Find the slope in the table!
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5/2 or 2.5
What is the rate of change between (0,2) and (3, 5)?
3/3 or 1
What is the equation of the graph below?

y = 2/3x + 4
Draw a scatter plot with no association.

Find the slope between x = -3 and x = 0

3/3 or 1
Does this table represent a linear function? If so, what is the rate of change (slope)?

Yes, m = 4/1 = 4
What is the rate of change between (-5, 3) and (1, 1)?
-2/6 = -1/3
What is the equation of the graph below?

y = -3/4 x
Han walked from school back to his house. He recorded the data below on his Fitbit. How long was Han walking for? Assume each unit is 5 minutes.

30 minutes (from A to B, from C to D)
See Slides for last question!
See Slides for answer!