CPM Homework Help : ACC7 Problem 6-29

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6-29.

Change each equation below into $y=mx+b$ form.

$y+6=-2\left(x+3\right)$
Hint (a):
First distribute the -2. Then solve the equation for $y$ .
More Help (a):
$y+6=−2x-6$
$\ \ \ +6\ \ \ \ \ \ \ \ \ \ \ \ +6$
Answer (a):
$y=-2x−12$

$4x-5y=15$
Hint (b):
Solve the equation for $y$ .
More Help 1(b):
$4x−5y=15$
$\ \ \ \ -4x\ \ \ \ \ -4x$
More Help 2(b):
$-5y=-4x+15$
Now divide everything by $-5$ .
Answer (b):
$y=\frac{4}{5}x-3$

$4x-4y=12$
Hint (c):
Follow the steps in part (b).

$-\left(y-2\right)+3x=7$
Hint (d):
First distribute the $-1$ .
More Help (d):
Follow the steps in part (b).
Answer (d):
$y=3x-5$

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