SOLUTION: in each case determine whether the lines are parallel or perpendicular, or neither. y=x+7 y=-x+2

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Question 326096: in each case determine whether the lines are parallel or perpendicular, or neither.
y=x+7
y=-x+2
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Parallel lines have identical slopes.
Perpendicular lines have slopes that are negative reciprocals.
m1%2Am2=-1
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.
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m1=1
m2=-1
They are not parallel.
m1%2Am2=1%28-1%29=-1
They are perpendicular.
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.
.
graph%28300%2C300%2C-10%2C10%2C-10%2C10%2Cx%2B7%2C-x%2B2%29