Find the slope of this line

Me. i need an answer asap. , you! select the correct answer from each drop-down menu.simplify the given polynomial and use it to complete the statement.the polynomial simplifies to an expression that is a blank with a blank degree of blank .

Solve the system of equations. y= 2x y= x^2 - 15

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function