My parabola is in red, and the basic parabola is in blue (f(x)=x^2). As you can see from the graph above my parabola is flipped, wide, moved up one and forward 7. The -1/3 in my equation makes my parabola flip upside down because of the negative and make it wider because the value is in between 1 and 0. This is the A value. My parabola is moved forward 7 because of the -7 in the brackets beside the x. Whenever we have a negative number in this place, we always move it forward on the grind and we move it back if its positive. This is called the H value. the reason the parabola is moved up one is because of the very last number. Unlike the H value this number move the parabola up or down the same direction as the positive or negative value Infront of it. This is called the K value.