Question 135848
Tell whether the ordered pair is a solution of the linear system. 
(-2,15);
y= -3x + 9
y= 5x + 25 
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Substitute to see if you get two true statements:
15 = -3*-2+9
15 = 6+15
15=15
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15 + 5*-2+25
15 = -10+25
15 = 15
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The ordered pair is a solution.
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Cheers,
Stan H.