What are the zeros of 2x^2+17x=-21

Plzzzz i beg u asap ! what is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Sanjay solved the equation below. which property did he use to determine that 7x+42=42 is equivalent to 7(x+6)=42 7x+42=42 7x=0 x=0