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i know the slope is -2

Find the midpoint also, the perpendicular line will pass through this point.

the midpoint is -1,4

So can you write an equation for a line that passes through (-1,4) with a slope of 1/2?

so it would be
y-4 = 1
x-(-1) = 2 ?

the answer is 2x - y = -6
but i get a different answer

\[ y-2x=6\]

or it can be written as \[2x-y=-6\]

isnt the mid point (-1,4)?

1 + (-3) = -2
then -2 / 2 = -1

nikkyster if you got the slope to =2, you calculated the slope wrong

The slope of the original line is -1/2

i got the slope to be -2

yeah slope of line is \[-\frac{1}{2}\]

I should've double checked it earlier ;p

But you have the right midpoint

yeah your right ! i got the slope wrong

what about for midpoint with a decimal?

|dw:1328422920367:dw|

A(3,1) B(-3,6)

the midpoint is (0,3.5)
and the slope would be -5/6

is this another problem?

yes

what's the question? prependicular equation?

perpendicular ?