i dont know how to solve these

Hello again, M -- Yint happens when x=0 ... a) Yint = 9 ... you may try the rest

Xint is when y=0 ... a) x^2 -6x +9 =0 factors (x-3)(x-3) => Xint=3 ... you may factor rest

axis of symm for y= ax^2 +bx +c is x= -b/(2a) ... a) axis is x= -(-6)/(2*1) ==> x=3 ... try rest :)