What is the vertex and the equation of the axis of symmetry of the graph of y=x2-6x-7?

The vertex is (3,-16)  and axis of symmetry is 3

Step-by-step explanation:

The vertex of a quadratic equation is calculated as

and the axis of symmetry is  

Compare equation with

Where a= 1 and b = -6

so,

Now, put the value of x=3 in

Therefore, the vertex is (3,-16)  and axis of symmetry is 3

d no solution

step-by-step explanation:

#12 the answer is the third option