Does the line that passes throught the points (-3,2) and (2,5) have a positive or negative slope?
^^ help again^^
2007-07-23 05:30:15 · 6 answers · asked by Kwan L 2 in Science & Mathematics ➔ Mathematics
Positive. The formula for slope is (y2 - y1) / (x2 - x1), where it doesn't matter in which order you assign the ordered pairs (x1, y1) and (x2, y2), as long as you're consistent. In this case, if we say (x1, y1) = (-3, 2) and (x2, y2) = (2, 5), you get (5 - 2) / (2 - (-3)) = 3 / 5 or 0.6, a positive slope. If you assign the points the other way around, you still get (2 - 5) / (-3 - 2) = -3 / -5 = 3 / 5 = 0.6, the same slope.
2007-07-23 05:32:25 · answer #1 · answered by DavidK93 7 · 1⤊ 0⤋
Let us find the eqn of the line, then determine the slope. Use the slope intercept method:
y(x) = mx + b where m is the slope
y(-3) = -3m + b = 2
y(2) = 2m + b = 5
Subtract first from the second to get rid of b:
5m = 3
m = 3/5, postive slope
2007-07-23 05:34:59 · answer #2 · answered by kellenraid 6 · 0⤊ 0⤋
Slope Formula
m = y₂ - y₁/ x₂- x₁
Ordered Pair
(- 3, 2)(2, 5)
m = 5 - 2 / 2 - (- 3)
m = 3 / 2 + 3
m = 3/5
Slope is 3/5
Positive slope
- - - - - - - - -s-
2007-07-23 06:16:26 · answer #3 · answered by SAMUEL D 7 · 1⤊ 0⤋
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2016-10-22 10:33:07 · answer #4 · answered by ? 4 · 0⤊ 0⤋
dude - i gave you the eqn needed for this -- try it out on our own once!
slope = (y2 - y1)/(x2 - x1)
the points are written in the following form:
(x1, y1) and (x2, y2)
where the 1's and 2's are subscripts..
2007-07-23 05:34:32 · answer #5 · answered by miggitymaggz 5 · 0⤊ 0⤋
positive, it goes up from left to right.
Not knowing how to do this is no laughing matter, please ask your teacher for help and/or read the book, or look for help on math websites...please do...
2007-07-23 05:38:13 · answer #6 · answered by Anonymous · 0⤊ 0⤋