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Math help Please

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Intern
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Joined: 19 Jan 2018
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Math help Please [#permalink]

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New post 19 Jan 2018, 11:14
The coordinates of point E are (−9, −5) and the coordinates of point F are (−2, −1) .

What is the slope of the line that is perpendicular to EF¯¯¯¯¯?

Enter your answer as a simplified fraction in the box
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Re: Math help Please [#permalink]

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New post 19 Jan 2018, 11:28
lorenavh1 wrote:
The coordinates of point E are (−9, −5) and the coordinates of point F are (−2, −1) .

What is the slope of the line that is perpendicular to EF¯¯¯¯¯?

Enter your answer as a simplified fraction in the box





Slope of the line perpendicular to EF is (-7/4)

Slope of EF = (y2-y1)/(x2-x1) = (-1+5)/(-2+9) = 4/7

If the lines are perpendicular product of their slopes is -1.

Slope of the line perpendicular to EF is (-7/4)

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Re: Math help Please   [#permalink] 19 Jan 2018, 11:28
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