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Mathematics 21 Online
OpenStudy (anonymous):

what is the slope of the line that is perpendicular to the graph of y=-1/2x+4

OpenStudy (asnaseer):

do you know the slope of the line whose equation you have given?

OpenStudy (anonymous):

-1/2

OpenStudy (asnaseer):

correct - now the product of the slopes of two lines that are perpendicular to one another is -1

OpenStudy (anonymous):

i was taught it is the reciprocal of the first one so would it be -2/1

OpenStudy (asnaseer):

(slope of one line) * (slope of line perpendicular to that line) = -1

OpenStudy (asnaseer):

so, slope of perpendicular line = -1/slope of original line

OpenStudy (asnaseer):

the minus sign is significant

OpenStudy (anonymous):

how do i make i -1/-1/2?

OpenStudy (asnaseer):

what can you multiply \(-\frac{1}{2}\) by in order to get -1?

OpenStudy (anonymous):

2/1

OpenStudy (asnaseer):

correct - so answer is 2.

OpenStudy (anonymous):

so its just 2 or can i put 2/1

OpenStudy (asnaseer):

2/1 is the same as 2. any number divided by 1 is the same number.

OpenStudy (anonymous):

okay thank you so much

OpenStudy (asnaseer):

yw

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