I need #3 and 4, please! Also please no links let someone else who can actually answer it, answer it. Thank you.

Which graph represents the following piecewise defined function?

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]