Algebra
posted by BC .
Q=505P. Solve the equation for P
Choose the right one
P=50Q
P=50+Q
P=105Q
P=10(1/5)Q
P=505Q

q=505P
subtract 50
q50=5P
divide by 5
1/5q50/5=P
1/5Q+10=P
so it's the fourth answer. 
Thank You, I thought that was but not 100% sure because I get backwards on the positive and negatives, Do you know how I find out the slope of the line or would graph it then?

If you plot P on the horizontal (x) axis, and Q on the vertical (y) axis, then the slope is (1/5).

so it is negative then? (1/5) Thank You