Expression 9: StartFraction, left parenthesis, "x" minus 4.5 , right parenthesis squared Over 16 , EndFraction plus StartFraction, left parenthesis, "y" , right parenthesis squared Over 8 , EndFraction equals 1 left brace, 0 less than "y" less than 5 , right bracex−4.5216+y28=10<y<5