2007-05-28 11:06:03 · 15 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
y = (9x - 7)/4
2007-05-28 11:08:42 · answer #1 · answered by rick c 2 · 0⤊ 0⤋
Add the 4y to the right and subtract the 7 to the left:
9x - 7 = 4y
Switch sides:
4y = 9x - 7
Divide everything by 4:
y = 9x/4 - 7/4, or y = 2.25*x - 1.75
2007-05-28 18:09:33 · answer #2 · answered by C-Wryte 3 · 0⤊ 0⤋
i am assuming you don't need a numerical answer.
9x - 4y = 7; solve for y.
subtract the x term from both sides or add a -9x to both sides to isolate the y term.
9x - 9x -4y = 7 - 9x
OR
-9x + 9x - 4y = -9x + 7
you get:
-4y = 7 - 9x
OR
-4y = -9x + 7
it's just 2 different ways of writing the same thing.
now divide both sides by -4 to solve for y.
-4y / -4 = (7 - 9x) / -4
y = (7 - 9x) / -4
2007-05-28 19:21:49 · answer #3 · answered by mitzubishi4338 3 · 0⤊ 0⤋
9x-4y=7
-9x = -9x
-4y=-9x+7
/-4= /-4(that is divide by -4 and on the right side make sure to divide everything by -4)
y = 9x/4 - 7/4
2007-05-28 18:11:05 · answer #4 · answered by wowzers 2 · 0⤊ 0⤋
9x-4y=7 solve 4 y = i think erm = y=5
2007-05-28 18:09:59 · answer #5 · answered by Anonymous · 0⤊ 1⤋
y= -7/4 + 9x/4
2007-05-28 18:16:54 · answer #6 · answered by R 2 · 0⤊ 0⤋
9x-4y=7 subtract 9x from each side
-4y=7-9x divide both sides by -4
y=9x/4-7/4 or
y=2.25x-1.75
2007-05-28 18:09:56 · answer #7 · answered by yupchagee 7 · 0⤊ 0⤋
-4y=7-9x
2007-05-28 18:30:12 · answer #8 · answered by nana o 1 · 0⤊ 0⤋
9x - 4y= 7
9x-7 = 4y
(9x-7)/4 = y
2007-05-28 18:10:01 · answer #9 · answered by ironduke8159 7 · 0⤊ 0⤋
9x-4y=7
-4y+9x-9x=7-9x
-4y=7-9x
-4y/-4= 9/4x-7/4
y=9/4x-7/4
2007-05-28 18:51:23 · answer #10 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋