How do i rearrange this function:

2x^2 + xy + y^2 = 4

as a function of y?

Which shows one way to determine the factors of  x3  +  5x2  –  6x  –  30 by grouping? x(x2  –  5)  +  6(x2  –  5)x(x2  +  5)  –  6(x2  +  5)x2(x  –  5)  +  6(x  –  5)x2(x  +  5)  –  6(x  +  5)

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Which equation represents the function on the graph?