Help quick (for a friend)

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)