2007-01-08 11:25:59 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Find the slope of the two points.. then use point-slope form of a line to write the equation.
2007-01-08 11:29:33 · answer #1 · answered by btolin11 2 · 2⤊ 3⤋
To have a linear equation, you must have at least two points.
Find the slope of the two points. You can make up two points in the (x, y) form and then use the slope formula to find the slope.
Then use the point-slope formula to write the equation of the line.
The word linear means the same as LINE.
Guido
2007-01-08 19:32:32 · answer #2 · answered by Anonymous · 0⤊ 2⤋
you can use the point-slope formula...
y - y1 = m(x - x1)
where y1 and x1 are the x and y coordinates of one point on the line.
slope m is found using the two given points with the formula
m = (y2 - y1) / (x2 - x1)
To get the equation in y = mx + b form, just add y1 to each side. and distribute m over (x - x1)
2007-01-08 19:42:15 · answer #3 · answered by lifeaura18 2 · 0⤊ 1⤋
First, you find the slope. The equation for that is delta y/delta x.
Extend the line in both directions, and find where it crosses the y-axis(y-intercept).
In the equation y=mx+b, m is the slope, and b is the y-intercept.
2007-01-08 19:32:20 · answer #4 · answered by mkn 2 · 0⤊ 1⤋
Let take two points as (a,b) and (c,d). Then the line joining these two points can be write as:
(x-a)/(y-b) = (c-a)/(d-b)
(x-a)*(d-b) = (y-b)*(c-a)
x*(d-b) - a*(d-b) = y*(c-a) - b*(c-a)
(d-b)*x - (c-a)*y - ad + ab + bc - ba = 0
(d-b)*x - (c-a)*y + bc -ad = 0
2007-01-08 19:53:17 · answer #5 · answered by hirunisha 2 · 0⤊ 2⤋
like on a graph
well
1 pt be c,v
2 pt be a,b
then eqn is
x-c)/(y-v)=(x-a)/(y-b)
2007-01-08 19:31:10 · answer #6 · answered by well thts it...... 3 · 0⤊ 2⤋