Question

Solve the following system by graphing x + y - 6= 0 x- y = 0

Answer 1

Explanation:

y=6-x first equation

y=x for the second

Answer 2

(3,3)

Explanation:

x + y - 6= 0

x- y = 0

Add the two equations together

x + y - 6= 0

x- y = 0

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2x - 6 = 0

Add 6 to each side

2x-6+6 = 0

2x = 6

Divide by 2

2x/2 = 6/2

x = 3

Now find y

x-y = 0

3 - y = 0

y = 3