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Andrej [43]
3 years ago
10

What is the slope of the equation of 3x+9y=-9

Mathematics
1 answer:
dezoksy [38]3 years ago
4 0
To solve this, you must put the equation in slope-intercept form, which is y=mx+b.
To do this, isolate y.

First, subtract 3x from both sides.
3x + 9y = -9
3x + 9y - 3x = 9y
-9 - 3x = -9 - 3x
9y = -9 - 3x

Now, divide both sides by 9.
9y = -9 - 3x
9y / 9 = y
-9 / 9 = -1
-3x / 9 = -0.33x = -1/3x
y = -1 - 1/3x

In y = mx + b form:
y = -1/3x - 1

In slope intercept form, m is the slope.
In our answer, -1/3 is m, so it is the slope.

So the final answer is that the slope is -1/3.

Hope this helps! 
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