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mem8163
16.07.2019 •
Mathematics
Which point is on a line that passes through point r and is perpendicular to line pq?
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Ответ:
(-4,-8)
Step-by-step explanation:
Given is a picture with a point R and a line PQ
We have to find the point out of the 4 options lying on the perpendicular line to PQ through R
R is the point (4,2)
P is (-6,4) and Q is (4,-4)
Slope of PQ =![\frac{-4-4}{4+6} =-0.8](/tpl/images/0097/9584/3ed36.png)
Slope of perpendicular line would be =![\frac{1}{-0.8} =-1.25](/tpl/images/0097/9584/1767a.png)
Equation of the line through R with slope -1.25 is
Out of the four options,
only (-4,-8) satisfies
because![-8 =-1.25(-4)-3](/tpl/images/0097/9584/7305e.png)
so answer is (-4,-8)
Ответ:
Step-by-step explanation: