Find a general form equation for the line through the pair of points:
1. (1,-3) and (5,-3)
2. (-1, 2) and (2,5)

Question

Find a general form equation for the line through the pair of points:
1. (1,-3) and (5,-3)
2. (-1, 2) and (2,5)

baldymcgee6 · Answer

do you know how to find the slope when given two points?

anonymous · Answer

Refresh my memory please. :) 
Wait, Y2-Y1 over X2 - X1?

baldymcgee6 · Answer

right... so do that for #1

anonymous · Answer

I get 0/4?

baldymcgee6 · Answer

right, so the slope is 0, which is a horizontal line

baldymcgee6 · Answer

y=mx+b
m = 0 therefore y=b

baldymcgee6 · Answer

from the (x,y) co ordinates y= -3

anonymous · Answer

So there is still the x in y=x-3? Because I thought being that the m=0, it would make it 0 times x, which results in 0 or crossing the x out. Making it y=-3?

anonymous · Answer

Also the y-intercept is -3 because the first co ordinates have -3 as y? What if the co ordinates were to have 2 different Y's like in the 2nd question

baldymcgee6 · Answer

yeah sorry y = -3

baldymcgee6 · Answer

for the second question.. slope is 1, so m=1 throw in some x and y values and solve for b

anonymous · Answer

Got 3 for b, thanks for the help!