What is the purpose of a regression line? to connect all the points in a scatterplot to show the general tendency of the points in a scatterplot to provide a scale for the x-coordinates of the points in a scatterplot to provide a scale for the y-coordinates of the points in a scatterplot

to show the general tendency of the points in a scatterplot

Step-by-step explanation:

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36