Points (?, 3) and (-2, -5) lie on a line with slope 4. What is the missing coordinate?

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2007-05-27 02:00:10 · 4 answers · asked by wick4d_on4 1 in Science & Mathematics ➔ Mathematics

The missing coordinate is x = 0
Rise over run = 3 -(-5) over x -(-2)
8 over 2 is already 4, so the x here is 0

2007-05-27 05:16:17 · answer #1 · answered by Don E Knows 6 · 0⤊ 0⤋

The difference is the y coordinates over the difference in the x coordinates equals the slope.

So

-5 -3/-2-? = 4

2007-05-27 09:26:55 · answer #2 · answered by cicero 2 · 0⤊ 0⤋

The slope = (y2 - y1)/(x2 - x1)
4 = ( -5-3)/(-2-x1)
4 = -8/(-2 -x1)
-8 -4x1 = -8
i.e x1 = 0

2007-05-27 09:06:37 · answer #3 · answered by a_ebnlhaitham 6 · 1⤊ 0⤋

(-5 - 3) / (-2 - x) = 4
- 8 = - 8 + 4x
4x = 0
x = 0
Points are (0,3) and (- 2, - 5)

2007-05-27 13:40:26 · answer #4 · answered by Como 7 · 1⤊ 0⤋