1 plus 1 is 2.
Use your fingers, put up one finger and one finger. Put them together and you have two
Hope this helps
Its 8/10 or 12/15 because 4 times 2 is 8 and 5 times 2 is ten
The slope-point formula:

We have (3, -5) and (-8, 4).
Substitute:

-8 - 7x is the factored version.
The outlier (61) is at the low end of the data set, but doesn't affect the mean by a lot, so ...
The mean is centered among the other numbers in both sets of data.
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The mean without the outlier is 114. With the outlier, it is 107.4. The lower quartile is 108, so the mean does get moved outside the "box" of the box-and-whisker plot of the data set without the outlier.