How do you write an equation of a line going through (-2,2) (2,-2)?
1 Answer
Mar 14, 2016
y = - x
Explanation:
General equation of a line:
y = ax + b. Find a and b.
Write that this line passing through the 2 points (-2, 2)(2, -2).
2 = -2a + b
-2 = 2a + b.
Add up the 2 equations, we get
2b = 0 --> b = 0
2a = -2 --> a = -1
Line equation y = - x
