*PLEASE HELP* The graphs of the lines represented by the equations y = 1/3x + 7 and y = -1/3x - 2 are

1.parallel

2.horizontal

3.perpendicular

4.intersecting, but not perpendicular

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

One integer is 5 more than another. their product is 104. find the integers

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x