The point Q has coordinates (2,3) the point R has coordinates (a, b) a line perpendicular to QR is given by the equation 5x+ 2y=9 find an expression for b in the terms of a HELP QUICKLY

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Find two numbers if their sum is 91 and the ratio is 6: 7?

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?