What is the y-coordinate for the solution to the following system of equations? -10x + 6y = 90

6x + 9y = 36

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect