Find an equation of the line containing the pair of points(,-4) and (8,)

Question

Find an equation of the line containing the pair of points( ,-4) and (8, )

Answer 1

There are an infinite number of lines that go through any one point.

You need either 2 points or a point and a slope to determine a line.

In addition, you need to properly define a point. You must provide either an ordered pair or specify which number is x and which number is y.

Answer 2

line through points ( ,-4) and (8, ) is what?

(a,-4) and (8, b) have a line through them with equation in point slope form =

y+4 = [(-4-b)/(a-8)][x-a]

y = (b+4)x/(8-a) + a(4+b)/(a-8)

well, no guarantees as to errorless calculations, but correct or close, sort of

where a = the x coordinate of the 1st point

and b = the y coordinate of the 2nd point