Question

Solve the system of equations by graphing.

x+y=3
y=2x−15

Answer 1

Hey!

Hope this helps...

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x + y = 3

x = 3 - y

y = 2x - 15

y = 2(3 - y) - 15

y = 6 - 2y - 15

y = -2y - 9

3y = -9

y = -3

y = 2x - 15

-3 = 2x - 15

-2x = -12

x = 6

So...

The answer is: (6, -3)

Answer 2

Explanation:

x+y=3

graphing the equation by X intercept (3,0) and Y intercept (0,3)

y=2x-15

graphing the equation with slope = positive 2

and Y intercept = -15

and graphs of these lines are given as follows

solution is given by (6,-3)