Answer:

Step-by-step 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 <em>vertical line </em>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 <em>horizontal line</em>.
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!
I'd say the mode is probably also 12.
Divide the cost, 9, by 15 to get the cost per cookie: 6 cents
10 000 samples wiegh 1 pound.
1 sample would weigh (1 / 10 000) pound
10 samples would then weigh 1 / 10 000 * 10 = 1/1000 = 0.001 Pound