Question

What is the equation in standard form of the line which passes through (–2, 6) and has a slope of –1?

x + y = –4

x + y = 4

x – y = –4

x – y = 4

Answer 1

Solve by inputting (-2, 6) into each equation. x+y=4, -2 + 6 = 4, 4=4, true.
Rewrite x+y=4
y=-x+4
y=mx+b
mx is slope, b is y intercept.
-x=-1 slope.