#2**-1 **

It doesn't seem to be A or C because the slope doesn't look that steep.

After estimating we can see that the slope of B still looks too steep, so I'd say D.

To check, you can see the y-intercept is around 20 and the slope is about 1.

You are very welcome!

:P

CoolStuffYT Nov 21, 2018

#3**+1 **

This won't be precise....but...It appears that the y intercept would be at ≈ 20

So.....we only have two equations to consider

y = x + 20

or

y = 2x + 20

Note that the last data point on the right has a y value of ≈ 65

And the x value associated with this point ≈ 20

And assuming that a line of best-fit * might *pass through the second data point from the left

The coordinates of this point ≈ (2.5, 25)

So....the slope of the line is ≈ [ 65 - 25 ] / [20 - 2.5] ≈ 2.3

Thus....our "equation" might be y = 2.3x + 20

This is closest to y = 2x + 20 ⇒ 2nd answer

I hope that makes sense, NSS...

CPhill Nov 21, 2018