Need help finding the slope of 5/2

In what form is the following linear equation written y=9x+2

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?