SOLUTION: The line passing through (0,y) and (3,0) is perpendicular to the line joining (2,4) and (-2,2). Find y

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Question 1117227: The line passing through (0,y) and (3,0) is perpendicular to the line joining (2,4) and (-2,2). Find y
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the slope of the line joining the two points.
m=%282-4%29%2F%28-2-2%29=-2%2F%28-4%29=1%2F2
Perpendicular lines have slopes that are negative reciprocals so,
m%2A%281%2F2%29=-1
m=-2
.
.
.
m=%280-y%29%2F%283-0%29=-2
Solve for y.