Because the slope doesn't tell you any actual points on the line.
It only tells you whether the line tilts up or down, and how steeply.
But the line could be way up there or way down under, with the same slope.
You can't actually DRAW it until you know some point on it, and
the y-intercept gives you one.

7 0

3 years ago

Simplify square root of 5 open parentheses 10 minus 4 square root of 2 close parentheses

Helga [31]

The answer is none of the above

4 0

3 years ago

John's commute time to work during the week follows the normal probability distribution with a mean time of 26.7 minutes and a s

Galina-37 [17]

A suitable probability calculator will tell you that probabilty is about 25.9%.

_____

The normalcdf function on this calculator gives an area between a lower and upper limit. If the upper limit is more than about 8 standard deviations above the mean, the 10th decimal place is unaffected. Since the standard deviation here is about 5, we need to have an upper limit that is about 40 above the mean of about 30. We have chosen 80 as a nice round number and to give a little more margin.

4 0

3 years ago