BIGJAYWESTSIDE
02.03.2020 •
Mathematics
In the xy-coordinate plane, lines m and n are
perpendicular. If line m contains the points (0,0)
and (3, 1), and line n contains the points (2, 3) and
(1, a), what is the value of a?
Solved
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Ответ:
I found the slope of line m using slope formula (y2-y1 / x2-x1).
Line M slope is (1/3).
Perpendicular lines have a negative reciprocal slope. So we know line N slope will be -3.
Use slope formula again for line n with the line n coordinates given, AND equal it to -3 to solve for a.
Check out the pic to see work.
Ответ:
they might weigh up to 60