CPM Homework Help : PC3 Problem 2-14

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2-14.

Algebraically solve each system of equations and state the method you used. Graphically check your answer.

$y=\frac{1}{2}x+5$
$2x+y=10$
Hint (a):
Use substitution.
Step (a):
$2x+\Big(\frac{1}{2}x+5\Big)=10$

$2y-3x=7$
$-y+2x=-2$
Hint (b):
Use the Elimination Method.
Step (b):
$2y-3x=7$
$-2y+4x=-4$

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