-b/2a is the axis of symmetry formula.
To solve those 4 questions, find the values of a and b (coefficients of ax^2 and bx term) and substitute them into the formula.
Hope this helps!
8
8 multiplied by -4 gives -32
Answer:
8 units because the diameter is the side to side length of the circle so when you count it you get 8 units.
