## anonymous 4 years ago What is the slope of the line represented by the equation y = 7?

1. anonymous

the equation for slope is $m = \frac{ rise }{ run } = \frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }$ and for a line y = 7 no matter what x you take the y value remains the same so you will always get $\frac{ 7-7 }{ x _{2}-x _{1} } =\frac{ 0 }{ x _{2}-x _{1} }$ and zero divided by any number is still zero

2. anonymous

$\frac{ \Delta y }{ \Delta x }$

3. anonymous

What is the slope of the line represented by the equation x = -9? this is the last one

4. anonymous

The slope of the line is undefined...there is only one x- value for an infinite amount of y values,

5. anonymous

thankyou! thats the answer i thought it was, I just wanted to make sure.

6. anonymous

would anyone mind helping me on a few more?

7. anonymous

@Eleven17 No an undefined slope is the equation x = 7 because you divide by zero when calculating the slope and any number divided by zero is undefined (infinite) when zero is divided by a number the answer is still zero not undefined thus the slope can still be calculated

8. anonymous

@itsjustme_lol yes just close this question and post the next one as a new question

9. anonymous

thanks