SOLUTION: The slope of line m is negative 1 over 5 (fraction). What is the slope of a line perpendicular to m?

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Question 446851: The slope of line m is negative 1 over 5 (fraction). What is the slope of a line perpendicular to m?
Found 2 solutions by mananth, mohammadrezai:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
m1*m2=-1
-1/5 * m2=-1
m2= -1 * -5/1
m2=5

Answer by mohammadrezai(14) About Me  (Show Source):
You can put this solution on YOUR website!
Y=mX+b
V=nU+c
b and c are not important because lines continues and in 2D two line are:
1) Parallel (example y=2x and 2 y=4x+3)
Or
2) Coincident (example y=2x+5 and 2y=4x+10)
And or
3) Crisscross (any lines that are not parallel an coincident)
Only the position is that in one lines x greats also y greats and other line x greats y reduces and two (growth and reduction) are equal absolute value. There multiple slopes are -1.
Slop y=mx+b with permits m=(-1)/5 is (-1)/5.
Slop two lines that are perpendicular together follow this formula:
m×n=-1
That m and n are slopes the lines.
There for the answer is (+5) because (-1/5)×(+5)=-1