Question

How do you solve the system of equations `x+y=3` and `3x+2y=14` by graphing?

Answer 1

See explanation

Explanation:

These are equations of strait lines.

You need to plot `y` against the functions of `x`
So you need to change then into the format of `y=mx+c`
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Consider: `" "x+y=3`

Subtract `x` from both sides

`y=-x+3`
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Consider `" "3x+2y=14`

Subtract `3x` from both sides

`2y=-3x+14`

divide both sides by 2

`y=-3/2 x+7`
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Substitute at least 2 values into `x` in each equation to determine related values of `y`.

Plot the two lines and read of the `x and y` values where they cross.