Answer:

Explanation:
We want to find an equation of a line that's perpendicular to x=1 that also passes through the point (8,-9). 
Note that x=1 is a vertical line since x is 1 no matter what y is. 
This means that if our new line is perpendicular to the old, then it must be a horizontal line. 
So, since we have a horizontal line, then our equation must be our y-value of our point. 
Our y-coordinate of our point (8,-9) is -9. 
Therefore, our equation is: 

And this is in standard form. 
And we're done!