The slope-intercept form:
m - slope
b - y-intercept
We have the slope m = 4. Substitute:
Put the coordinates of the point (2, -3) to the equation of a line:
<em>subtract 8 from both sides</em>
<h3>Answer: y = 4x - 11</h3>
x is the temperature and y is the number of swimmers. If there are 80 swimmers, then y = 80 instead of x = 80
This is how Corey should have solved
y = 1.505*x - 88.21
80 = 1.505*x - 88.21 <--- replace y with 80
1.505*x - 88.21 = 80
1.505*x = 80 + 88.21 <--- add 88.21 to both sides
1.505*x = 168.21
x = 168.21/1.505 <--- divide both sides by 1.505
x = 111.767
x = 111.8
If there are 80 swimmers at the pool, then the possible outside temperature is roughly 111.8 degrees F. This temperature seems awfully large, so it's possible that Corey's regression equation has limited scope; in other words, it isn't too useful if x is outside a given interval.
The answer that you are looking for is, ml, Mm, cg
True because you divide h with A which results A/h. Then you multiply 2 with A so you can cancel 1/2 to make it 1. There you get b= 2A/h
