I think you mean "solve by graphing"
visit
http://rechneronline.de/function-graphs/
for excellent graphing help.
Be sure to use parentheses for proper grouping.
graph by solution
y= 7/4x-4
y= -1/4x+4
3 answers
sorry!
can you solve for me? I don't understand how to work the site.
can you solve for me? I don't understand how to work the site.
I don't know how you can have trouble at the site. If you just enter
7/(4x-4)
and
-1/(4x+4)
into the first two function boxes, and click "Draw", you will see the graphs and where they intersect. That appears to be (-3/4,-1).
Algebraically, set them equal:
7/(4x-4) = -1/(4x+4)
7(4x+4) = -1(4x-4)
28x+28 = -4x+4
32x = -24
x = -3/4
so, y = 7/(-7) = -1
7/(4x-4)
and
-1/(4x+4)
into the first two function boxes, and click "Draw", you will see the graphs and where they intersect. That appears to be (-3/4,-1).
Algebraically, set them equal:
7/(4x-4) = -1/(4x+4)
7(4x+4) = -1(4x-4)
28x+28 = -4x+4
32x = -24
x = -3/4
so, y = 7/(-7) = -1