use a matrix to find the solution to the system of equations -8x-8y=-16 6x-9y=-108

What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

At which value in the domain does f(x) =0?

Can someone me out here and the tell me the greatest common factor