ashley spends $12 to buy 3 pencils and 6 rulers. Jack spends $8 to buy 5 pencils and 2 rulers. what is the cost of 2 pencils and 2 rulers?

$ 3 left ashley money

$ 1 left  jacks money

$ 8 left ashley money

$ 4 left jacks money

Step-by-step explanation

3 pencils + 6 rulers = 12 - 9 = 3

5 pencils +  2 rulers = 8 - 7 = 1

12 - 4 = 8

8 - 4 = 4

I am guessing 2 rulers are two dollars and 2 pencil are 4 dollars

answer: you will have more water.

the proper way to switch them around is -2y + 1/2x = 4

and not really, there's no proper way to graph them. those two equations are exactly the same thing. if you are trying to graph by just plugging in x-values and finding a y-value, then it does not matter.

however, if you know what y = mx+b is, most people would move into y=mx+b form by following these simple steps:

multiply by sides by 2 so thatw we do not have to worry about denominator

2(1/2x - 2y) = 2(4)

x - 4y = 8

subtract x from both sides

-4y = -x + 8

divide both sides by   -4

y = (-x + 8) / -4 = 1/4x - 2 and we see immediately that -2 is the y-intercept and 1/4 is the slope.