Solve the equation for y (310=2y + x)

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

Me i’m stuck on all these questions besides the two bottom ones

Is the ordered pair (-10, 7) a solution to the equation y = 17 – x? yes or no