Question 687311
Solve the system graphically:
-3x + y = 7
-4x +4y = 12
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Graph the 1st equation
y = 3x + 7
If x = 0, y = 7
If x = 1, y = 10
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Plot (0,7) and (1,10) and draw a line thru them.
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Graph the 2nd equation:
!st simplify by dividing thru by -4 to get:
x - y = -3
2nd: Solve for "y":
y = x+3
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If x = 0, y = 3
If x = 1, y = 4
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Plot (0,3) and (1,4) and draw a line thru them.
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{{{graph(400,400,-10,10,-10,20,x+3,3x+7)}}}
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Solution is the point of intersection of the 2 lines: (-2,1)
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Cheers,
Stan H.