The slope of the line whose equation is x + y = 6 is a. -1 b. 1 c. 6

2 answers:

3 0

Let's rearrange the equation x + y = 6 to slope-intercept form. Solve for y.

x + y = 6

To get the y variable on the left-hand side alone, subtract x from each side.

x + y - x = 6 - x
y = 6 - x

Rearrange the right-hand side.

y = -x + 6

Now we have it in the slope-intercept form. And to find the slope, we look at the coefficient of x. But there is no coefficient of the -x term!

In all reality, there is. However, it's just 1. -1x is the same thing as -x. We don't show the 1 because it has no effect.

So, -1 is the slope.

lyudmila [28]3 years ago

3 0

you answer is -1 this helped me also and its right

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