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What is the slope of the line that has equation 6x + 3y = −15?

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Question:

A
−2

explanation

To identify the slope, put the equation in y = mx + b form by solving for y.

6x + 3y = −15

6x + 3y − 6x = −15− 6x

3y = −6x −15

\( \frac{\mathrm{3y} }{\mathrm{3}} = \frac{\mathrm{-6x-15} }{\mathrm{3}} \)

y= −2x – 5

The slope is –2, the coefficient of x

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