Answer: 92
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Explanation:
The line of best fit here is y = 6x+62
- m = 6 = slope
- b = 62 = y intercept
We started at (0,62) and go up 6 units and to the right 1 unit each time we move along this line.
If we tried something like x = 1, then,
y = 6x+62
y = 6*1+62
y = 6+62
y = 68
Meaning that someone spending 1 hour per week doing homework would lead to an estimated score of 68. This matches what the graph shows, and it helps confirm we have the correct regression line equation.
Let's now plug in x = 5
y = 6x+62
y = 6*5+62
y = 30+62
y = 92
Someone doing 5 hours of homework per week is estimated to get a score of about 92.
