Question

y=3x-27
x-1/3y=9

Answer 1

I suppose you want a number for x and y

first put the second equation..into slope intercept form like the first equation is

meaning isolate y

Answer 2

i dont understand

Answer 3

okay....we have

x-1/3y=9

and we want to make it look like y=mx+b

so we need to get "y" by itself on the left side of the equation...how do we do that?

Answer 4

hint......how do we move "x" to the right side of the equal sign?

Answer 5

still stuck @ObeyChyna ?

heres a rundown

x-1/3y=9

subtract x from both sides

-1/3y = 9 - x

how do we isolate y?

multiply by -3

***Notice that -3 cancels out -1/3****

y = -27 + 3x

or written correctly

y = 3x - 27

so those are our 2 equations..

y = 3x - 27
and
y= 3x - 27

look what we have here...it's the same equation...what does that mean? it means x and y have an infinite number of solutions

Answer 6

thank you !!! how about this equation----> y=4/3x-2
3y-4x=-6

Answer 7

okay ..same difference here

we already have an equation in slope intercept form (y=mx+b)

so to turn

3y - 4x = -6
into a
y = mx + b form

how do we do it?

Answer 8

hint: look at how i did it before with the other equation to help

Answer 9

ook but its still confusing

Answer 10

alright...so lets walk through it

we have 3y-4x=-6

how do we get 3y by itself on the left side of the equation? how do we move -4x to the right side of the "=" sign?