Susan9419

The equation of a line is. What will the slope be for a line that is perpendicular to this line?
m=-2/7
m= 2/7
m=7/2
m=-7/2

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hartnn

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equation of line is?

wio

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To make a slope perpendicular, you just take the reciprocal on the opposite.
In other words, you flip the fraction, and multiply by -1.
so -2/1 becomes 1/2

Susan9419

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the line is y=2/7x-5. sorry i forgot to put that in there!!!

hartnn

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compare it with y=mx+c
and tell me what is m(slope)

Susan9419

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the slope is 2/7

hartnn

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yes

hartnn

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now product of slope of perpendicular lines is -1
so m(2/7) =-1
can u find m from here

Susan9419

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so it would b -1x-5?

hartnn

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what?

hartnn

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m(2/7) =-1
m= -7/2

Susan9419

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ooh thanks ;D

hartnn

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welcome ^_^