If x and y are rational numbers with x and x/y are positive and not squared numbers, solve 2x+ sqrt (x/y) =x^2+1+sqrt(x) to find x and y

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

Which is a graph of a proportional relationship?

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?