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Determine the slope that is parallel to 3x+9y=12

User WillMcavoy
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(-1/3) slope intercept= y= -1/3x +4/3
User Bob Reynolds
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4 votes

Answer: slope is -1/3

a parallel line answer is below

Explanation:

3x+9y=12 can be automatically rewritten as 9y=-3x+12 but the proper form is y= (−1/3)x +(4/3)

to find a parallel line to another slope, you must keep the slope and change the y intercept.

so for example:

y= -1/3x + 4 would follow this rule

but really you can change the y intercept to anything reasonable

User Sergio Tulentsev
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