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in algebra... you know...i hope you know!!

2007-11-29 12:37:25 · 19 answers · asked by Anonymous in Science & Mathematics Mathematics

19 answers

the slope is m = (y2-y1)/(x2-x1)

where (x1,y1) and (y1,y2) are any two points on the line.

In general, slope = change in y / change in x

2007-11-29 12:40:31 · answer #1 · answered by James L 5 · 0 0

Example Problem

Find the slope of the line segment joining the points ( 1, - 4 ) and ( - 4, 2 ).

Solution

Label the points as x1 = 1, y1 = - 4, x2 = -4, and y2 = 2.
To find the slope m of the line segment joining the points, use the slope formula :


So, m = - 6/5.





The slope m of the line through the
points (x1, y1) and (x 2, y 2) is given by

2007-11-29 20:49:50 · answer #2 · answered by MZ954 2 · 0 0

to those people that said y=mx +b dont folllow them cus there wrong!! the formula is rise/run or in a more complicated way m=y1-y2/x1-x2(m meaning slope). for example, if u hav the ordered pairs (1,4) and (2,3) the slope would be 4-3/1-2. simplified the slope would be -1.

2007-11-29 20:48:30 · answer #3 · answered by Anonymous · 1 0

The slope-intercept form of a line is y=mx+b. slople is rise/run. Ex., it it goes up 2 and over 3, the slope is 2/3.

2007-11-29 20:40:44 · answer #4 · answered by Adam 4 · 1 0

How far the line goes up when it moves 1 to the right.
(if it goes down, the slope is negative.)
If it's not exact after one move, find another point where it's an integer. Divide the up/down movement by the movement to the right.

2007-11-29 20:41:04 · answer #5 · answered by SaintPretz59 4 · 0 0

m=y2-y1/x2-x1
The y=mx+b is slope-intercept

2007-11-29 20:42:43 · answer #6 · answered by Joel J 3 · 0 0

y=mx+b
y- The y-intersept
m-slope
x- The x intersept
b-it stays as b

2007-11-29 20:41:50 · answer #7 · answered by =l 3 · 0 0

slope is basically rise over run.

y2-y1
_____
x2-x1

the change of x between two points over the change of y between two points.

2007-11-29 20:42:19 · answer #8 · answered by Lisa C 2 · 0 0

Change in y devided by the change in x
or
(y2-y1) devided by (x2-x1)

2007-11-29 21:36:31 · answer #9 · answered by JuliaR 2 · 0 0

y=mx+b
m is slope

2007-11-29 20:39:57 · answer #10 · answered by Alejandro B 2 · 2 0

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