How do you find the equation if we have the co-ordinates?

Answer 1

To find a line that goes through two given points first find the slope between the points. (y-y)over (x-x) Then use a formula to find the rest.

I use the slope intercept formula and find "b" the y-intercept.

Let's try one.

(2,7) and (3,10)

7-10=-3

2-3=-1

-3/-1=3 the slope

7=3(2)+b

7=6+b

7-6=b

1=b

SO y=3x+1 is the formula for a line going through (2,7) and (3,10)