Question

can someone please explain to me on how to find slope on line of fit? (I don't have a problem or worksheet to explain, line of fit is my struggle in math XD)

Answer 1

You need to know two points on your line, in order to find the slope.

If you're given the y intercept, that is one point, (0,a) where a is the y intercept.

If you're given the x intercept, that's another point, (c,0) where c is the x intercept.

You could also be given points on the line that aren't an x or y intercept. Let's call these points (r,s) and (j,k).

To find the slope of the line, you need just two points. Take the difference of the y coordinates, and divide by the difference of the x coordinates to solve for the slope.

Using our two generic points (r,s) and (j,k), we would solve for the slope m as follows:

m = (s-k) ÷ (r-j)

Hope that helped!

Answer 2

Um...
Okay, there is another easy steps to do:)
First, you have to pick two line on the graph for example:
(7,8) and (3,4). Then, we just applied to the formula if finding the slope which is:
m=(y2-y1)/(x2-x1) where m is the slope
y2=4
y1=8
x2=3
x1=7
Apply to that same step to get:
m=(4-8)/(3-7)
m=-4/-4
m=1. Hope it help!