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The points (3,-2) and (15, r) lie on a line with slope -3/4. Find the missing coordinate r.​

The points (3,-2) and (15, r) lie on a line with slope -3/4. Find the missing coordinate r.​
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3 votes
The points (3,-2) and (15, r) lie on a line with slope -3/4. Find the missing coordinate r.​

asked
User Gazreese
by
9.0k points

1 Answer

1 vote
slope formula is m= y2-y1 / x2-x1

plug in the things you know so r-(-2) / 15-3

(r +2)/12 = -3/4

solve algebraically and you get r= -11
answered
User Charles Madere
by
8.2k points
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