The graph below shows the quadratic function f, and the table below shows the quadratic function g.

1) Graph of f(x)

You can read the y-intercept on the graph. It is the value of y-coordinate when x = 0; so ti is y = 6.

The axis of simmetry is the vertical line that split the graph into two symmetrical forms. That is the same that the vertical line that passes through the vertex. You can see that it is x = 2

2) Table of values of g(x)

The y-intercept is the value of y-coordinate when x = 0, so it is y = 8.

The axis of symmetry is x = 2.

the functions f and  have the same axis of symmetry and the y-intercept of f is less than the y-intercept of g.

You want to isolate your variable.