Answer:
The option 'b' is correct.
Step-by-step explanation:
Given the function
Determining the y-intercept
The y-intercept can be obtained by setting the value x = 0
Therefore, the y-intercept is:
Determining the axis of symmetry
Given the equation
For a parabola in standard form
the axis of symmetry is the vertical line that goes through the vertex
so
The axis of symmetry for is
Therefore, the option 'b' is correct.