How do I find the missing measurement?

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

What is the size of the matrix resulting from

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]