CPM Homework Help : CCA2 Problem B-109

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B-109.

Solve each system of equations.

$y = 3x + 11$
$x + y = 3$
Hint (a):
Use substitution.
Answer (a):
$(-2, 5)$

$y = 2x + 3$
$x - y = -4$
Hint (b):
Use substitution.

$x + 2y = 16$
$x + y = 2$
Hint (c):
Isolate x in one equation and use substitution.
Answer (c):
(−12, 14)

$2x + 3y = 10$
$3x - 4y = -2$
Hint (d):
Use elimination.

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