Question 982012
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y=x-1 (red),  y=3x-9 (green)
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{{{ graph( 800, 800, -10, 10, -10, 10, x-1, 3x-9)}}}
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Intersection at (4,3)
ANSWER: x=4, y=3
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CHECK:
y=x-1
3=4-1
3=3
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y=3x-9
3=3(4)-9
3=12-9
3=3