What line passes through (-1,7) and (2,10)?
A. -3x+y=16
B. -3x+y=4
C. -1x+y=8
D. -1x+y=12

+1

(1) Answers

FlorineCrayton

The points are (-1, 7) and (2,10)
First, get the slope (m)
m = (Y1-Y2)/(X1-X2)
m = (7-10)/(-1-2)
m = -3/-3
m = 1
using the slope-intercept formula, let's get x intercept (b)
y = mx + b
7 = 1(-1) + b
7+1 = b
b = 8
So we have m = 1, b = 8
y=mx+b
y = x + 8
y - x = 8
So the answer is letter C. -1x + y = 8