Given two points slope, write the equation of the line in the slope-intercept form.
.
(-1,9) and (2,0)
2006-09-05 05:15:52 · 11 answers · asked by Anonymous in Education & Reference ➔ Homework Help
I still dont get it
Also
(3, -2) and (-3,-6
(4,0) and (6,1)
2006-09-05 05:29:11 · update #1
Go to http://www.gomath.com/algebra.html select Slope, Equation, & y-intercept under Alegbra. Type in points for answer. Click on Mini-Lessons for explanation.
2006-09-05 06:02:25 · answer #1 · answered by littlestory 3 · 0⤊ 0⤋
y = - 3 x + 6
2006-09-05 12:20:39 · answer #2 · answered by WiseWisher 3 · 0⤊ 0⤋
equation for slope....( Y2 - Y1) / ( X2 - X1) ....
PICK POINTS 1 & 2
1 = (2,0) .. 2= (-1,9) = (9-0) / (-1 - 2) = 9 / -3 = -3
SO ..SOLPE = -3 (M=(-3))
Y INTERCEPT .... (IF X VALUE OF -1 =9 (PT.#2) THEN SUBTRACT ONE FROM X ...ADD 3 TO Y (SLOPE OF -3 SAYS WHEN YOU ADD 1 TO X, SUBRTACT 3 FROM Y ...or when you subtract 1 from x, add 3 to Y)
9 - 3 = 6 (b=6)
standard form = y = mX + b ...... y = -3x +6
2006-09-05 12:23:47 · answer #3 · answered by Brian D 5 · 0⤊ 0⤋
use the following equations
y-y=m(x-x), m= y-y/x-x so
9-0/-1-2
m=9/-3=-3
y-0=-3(x-2)
y=-3x+6
2006-09-05 12:36:07 · answer #4 · answered by yuna 2 · 0⤊ 0⤋
m = (9-0)/(-1-2) = -3
y = -3x+c
Using (2,0), 0 = -3(2) +c
c=6
Therefore, y = -3x +6
2006-09-05 12:19:44 · answer #5 · answered by J S 3 · 0⤊ 0⤋
9-0/-1-2
9/-3=-3
0=-3(2)+b
0=-6+b
b=6
y=-3x+6
2006-09-05 12:24:35 · answer #6 · answered by columbia11 2 · 0⤊ 0⤋
Wow, that's too much to ask after a long weekend ~ yawn!
2006-09-05 12:17:02 · answer #7 · answered by ndtaya 6 · 0⤊ 0⤋
http://www.terragon.com/tkobrien/algebra/topics/equationofline/equationofline.html
go here and type the plots. go all the way down.
2006-09-05 12:22:46 · answer #8 · answered by cindy61892 2 · 0⤊ 0⤋
equation=y-y1/y2-y1=x-x1/x2-x1
y-9/0-9=x+1/2+1
3(y-9)=-9(x+1)
y-9=-3x-3
y=-3x+6
2006-09-05 12:20:45 · answer #9 · answered by raj 7 · 0⤊ 0⤋
What? Well, I just dont get it!
2006-09-05 12:18:53 · answer #10 · answered by ninas 2 · 0⤊ 0⤋