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Leviafan [203]
3 years ago
6

What is the equation, in slope-intercept form, of the line that is perpendicular to the line

Mathematics
1 answer:
Fudgin [204]3 years ago
5 0
A line perpendicular to the given line would have an opposite signed reciprocal slope.  Since the slope of the given line is -1, then the perpendicular lines slope is 1.

Find b using y = mx + b or y - mx = b
-2 - 1(-2) = b
0 = b

The answer is y = x + 0 or y = x
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In a right triangle abc, cd is an altitude, such that ad=bc. Find ac, if ab=3 cm, and cd= square root 2 cm.
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      <u>ΔACB</u>                                               <u>ΔCDA</u>

AC² + BC² = AB²                           AD² + CD² = AC²  

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                         AB² - AC² = AC² - CD²         (both sides were = to BC²)

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                         (3)² + (√2)² = 2AC²            (AB=3 and CD=√2 were given)

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                               11        = 2AC²

                                \frac{11}{2}        = AC²

                                \sqrt{\frac{11}{2} }     = AC

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