2006-10-08 13:09:00 · 6 answers · asked by Eric 2 in Education & Reference ➔ Homework Help
(y1-y2) / (x1-x2) = slope
That is the formula for slope. Use two points on the graph and plug them into the formula.
For example, if you have the points (3,5) and (7,8), then your equation would look like this:
(5-8) divided by (3-7) equals -3 / -4 equals 3/4, so the slope is 3/4.
2006-10-08 13:20:42 · answer #1 · answered by sparkly_chrimsa 4 · 2⤊ 0⤋
y(2)-y(1)
_______
x(2)-x(1)
Where x1, y1 are the coordinates of one point on the line and
x2, y2 are the coordinates of a second point on the line. Or change in y divided by change in X. Vertical change divided by horizontal change (be careful to get the sign correct -9/3 is a slope of -3, not 3.)
2006-10-08 20:13:13 · answer #2 · answered by Searchlight Crusade 5 · 2⤊ 0⤋
measure the rise over the run. The slope is a ratio of the change in the Y axis divided by the change in the X axis. Read your text book since it will have many examples.
2006-10-08 20:10:50 · answer #3 · answered by Plasmapuppy 7 · 2⤊ 0⤋
if you have two points: (x1,y1) and (x2,y2) the slope of the line is: (y2-y1)/(x2-x1). If you have an equation of line that looks like this (point-slope form): y=mx +b, the slope is m. If you have an equation that looks like this (general form): ax+by+c=0. the slope is -a/b.
2006-10-08 20:13:24 · answer #4 · answered by Jordan 1 · 0⤊ 0⤋
rise divided by run or up and down over left and righ
2006-10-08 20:12:51 · answer #5 · answered by t-man foshizzle 2 · 0⤊ 0⤋
Go here and it explains:
http://www.purplemath.com/modules/slope.htm
2006-10-08 20:11:47 · answer #6 · answered by SweetPea 3 · 0⤊ 0⤋