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How do you solve the system $y = 2 x + 1$ $y = 2x + 1$ , $y = 3 x - 7$ $y = 3x - 7$ ?

1 Answer

Nov 15, 2015

2x + 1 = 3x - 7
1=x-7
x=8
y= 17

Explanation:

There are two equations explaining the value of y.
y is 2x + 1
y is also 3x - 7
Therefore, those values must be equal.

2x + 1 = 3x - 7

Continue till you get x= 8
Then substitute for x in any of those 2 equations.
y = 17

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