Question

Write the equation
{y=mx+b}
1)Given:(6,4)&(4,8)
2)Given:(2,3)&(1,2)

Answer 1

m is found by subtracting the points and stacking y/x

Answer 2

(6,4)
-(4,8)
------
2,-4; m=-4/2 = -2

we can use this in:

y = mx -mPx + Py , where (Px,Py) is either of the given points

Answer 3

y = -2x--2(6)+4

y = -2x+12+4

y = -2x+16

if we use the other point:

y = -2x--2(4)+8

y = -2x+8+8

y = -2x+16

same results