I can't figure out the standard form of a line with the coordinates (4,6) and (1,5). I've worked it out many times and I can't get the right answer. I need help :'(
The point-slope form is: y - y1 = m(x - x1)
If you call the point (4,6) =(x1,y1)
and if you find the slope: m = (y2 - y1) / (x2 - x1)
m = (5 - 6) / (1 - 4) = -1 / -3 = 1/3
Substitting these into the point-slope form: y - 6 = (1/3)(x - 4)
multiplying both sides by 3: 3y - 18 = 1(x - 4)
simplifying: 3y - 18 = x - 4
-x + 3y = 14
x - 3y = -14
The point-slope form is: y - y1 = m(x - x1)
If you call the point (4,6) =(x1,y1)
and if you find the slope: m = (y2 - y1) / (x2 - x1)
m = (5 - 6) / (1 - 4) = -1 / -3 = 1/3
Substitting these into the point-slope form: y - 6 = (1/3)(x - 4)
multiplying both sides by 3: 3y - 18 = 1(x - 4)
simplifying: 3y - 18 = x - 4
-x + 3y = 14
x - 3y = -14