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| PAGE: 89 | SET: Exercises | PROBLEM: 4 |
Treat the data as ordered pairs. From the table, write the goals as x - coordinate and the assists as y - coordinate.
Plot the ordered pairs as points in a coordinate plane.
The scatter plot shows a positive correlation between x and y. This means that as the x - values increased, the y - value tended to increase, so you can fit a line to the data.
Draw a line that appears to fit the points in the scatter plot closely.
Write an equation using any two points on the line.
Substitute the values of 
in the slope formula 
.
.
To write the line equation, we can use either of the two given points.
Consider the point 
.
Substitute 
in point-slope form equation or 
.
Apply distributive property: 
.
Add 29 to each side.
The line equation is 
.
Substitute the value of 
in the above equation.
Subtract 11.5 from each side.
Divide each side by 1.25.
Cancel common terms.
.
The missing value is 7, the equation is and its graph is
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