What is the simplest form of the expression (–12.7y – 3.1x) + 5.9y – (4.2y + x)? y – 4.1x

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.