The line tangent to the curve at
has slope

Then the tangent line has equation



Answer:
Equation of the axis of symmetry is: x = 3
Step-by-step explanation:
The equation

is the equation of a parabola, of the form
whose vertex is located at the x-coordinate:

Then, for our case the x position of the given parabola, is:

Then the equation of the axis of symmetry, which is a vertical line that goes through the vertex, would be given by:
x = 3
Make the mixed number to a whole fraction if you can or e.g. 2 3/3= 3 and add the whole number to the sum e.g. 3+4=7