Question

Which of the equations below could be the equation of this parabola?

Answer 1

B

Explanation:

• Parabola that is opening upward has the form
  `y=ax^2`
• Parabola opening downward has the form
  `y=-ax^2`
• Parabola opening leftward has the form
  `x=-ay^2`
• Parabola opening rightward has the form
  `x=ay^2`

Where a is a constant

Now, looking at the graph given, it takes the form
`x=-ay^2`

Where a is 3 (matching the answer).

Hence, B is the correct answer choice.