-In this form they give you the y-intercept which is the C value
-When the equation is not in standard form (y=ax^2+bx+c),you just have to move all the values to the same side by doing the opposite of what they are. In the example to the right you have to move the c value by doing the opposite which you have to subtract 8 to the other side. |
To find the axis of symmetry you have to use the vertex formula which is shown in the example to the left. then you get x=-2 and that is the axis of symmetry and to find the vertex you plug in the x to all the X's and solve for y and then you get the point (x,y). An example is to left. |