2006-11-26 13:39:23 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
x - 3y = 9
To solve for "y" you have to isolate it on one side of the equation. First subtract x from both sides to get:
-3y = 9 - x
then divide both sides by -3 to get:
y = (9 - x) / -3
Which is y = -3 + 1/3 x or in slope-intercept form:
y = 1/3 x -3
Now graph the y-intercept at -3 and use the slope (go 1 up + 3 across) to get the next point and so forth.
Hope this helps...Good luck! =)
2006-11-26 13:53:35 · answer #1 · answered by msdrosi 3 · 0⤊ 0⤋
Ok so:
x -3y = 9
-3y = 9 -x bring over x terms
3y = x - 9 devide by -1
y = (1/3)x - 3 devide by three.
Now graph.
It will be a line with a slope of 3 and the y-intercept (0,-3)
2006-11-26 13:44:05 · answer #2 · answered by Edgar Greenberg 5 · 0⤊ 0⤋
x - 3y = 9
0 - 3y = 9 (Substitute 0 for x)
y = 3 (Divide 9 by 3)
If you wanna solve for y substitute 0 for x and if you wanna solve for x substitute 0 for y, that' how you do it.
2006-11-26 13:44:22 · answer #3 · answered by . 6 · 0⤊ 1⤋
y=-3-x
x-3y=9
subtract x from both sides
-3y=9-x
divide each side by -3
y=-3-x
2006-11-26 13:43:57 · answer #4 · answered by Shaniqua B 2 · 0⤊ 1⤋
y = - 3
you would cover up x, so you will get -3 = 9, then you divide both sides by -3, now the answer is y = -3
2006-11-26 13:42:55 · answer #5 · answered by Angels Eyes 2 · 0⤊ 1⤋
it is shifted ectangular hyperbola ofthe type xy=c^2
with axis shifted to x=3,y=0
& sorry i am unable to understand what more do u want ??
2006-11-26 13:44:01 · answer #6 · answered by sidharth 2 · 0⤊ 1⤋