please help!!!!!
2007-09-12 14:26:13 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Solve the equation for y:
3x + 4y = -12
4y = -3x - 12
y = (-3/4)x - 12/4
y = (-3/4)x - 3
Alternatively, the equation 3x + 4y = -12 is in standard form:
Ax + By = C
So A = 3
B = 4
and C = -12
The slope, m, of a line in standard form is always m = -A/B, so in this case,
m = -3/4
The y-intercept, b, will always be C/B, so here,
b = -12/4 = -3
Putting these into the form y = mx + b, you also get
y = (-3/4)x - 3
I hope this helps!
2007-09-12 14:30:23 · answer #1 · answered by math guy 6 · 0⤊ 0⤋
ok in slope intercept the form is y=mx+b sooo you have to isolate the y
3x+4y= -12
4y= -3x-12
y= -3/4x - 3
and there you go
2007-09-12 14:30:18 · answer #2 · answered by Anonymous · 0⤊ 0⤋
3x + 4y = -12
4y = -3x -12
(1/4) * 4y = -3x - 12 * (1/4)
y = -3/4x - 3
2007-09-12 14:30:57 · answer #3 · answered by charonnisis 3 · 0⤊ 0⤋
3x+4y=-12
4y=-3x-12
y=-3/4 x-3
2007-09-12 14:31:11 · answer #4 · answered by ptolemy862000 4 · 0⤊ 0⤋
Work towards y = mx + b
The site below walks you through very nicely...
2007-09-12 14:31:36 · answer #5 · answered by GeriGeri 5 · 0⤊ 0⤋
solve for y.
slope intercept form is y=mx+b
2007-09-12 14:34:48 · answer #6 · answered by PhantomRN 6 · 0⤊ 0⤋