1. Determine whether -9x+11y^3-3=-7x^2 defines y as a function of x. Please show all of your work. (Points : 5)
11y^3 = 9x - 7x^2
y^3 = (9x-7x^2)/11
y = ( (9x-7x^2)/11 )^(1/3)
for every x I choose, there is one and only one value of y
so yes, it is a function