any help would be cool

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- July 27th 2008, 05:10 AM #1

- July 27th 2008, 05:13 AM #2

- July 27th 2008, 05:14 AM #3

- July 27th 2008, 05:47 AM #4
also need some help with this too

John bought 3 shirts and 4 pairs of socks for $78.

Joan bought 2 shirts and 6 pairs of socks for $72.

Letting $x equal the price of a shirt and $y equal the price of a pair of socks, write a linear equation to represent each transaction.

Draw on the same axes the graphs of the two equations. Read off the co-ordinates of the point of intersection to find the values of x and y.

i came up with this

3x + 4y = 78

2x+ 6y = 72

im not sure how do the graph