# SAT Math Multiple Choice Question 61: Answer and Explanation

Home > SAT Test > SAT Math Multiple Choice Practice Tests

### Test Information

- Use your browser's back button to return to your test results.
- Do more SAT Math Multiple Choice Practice Tests.

**Question: 61**

**1.** Which of the following equations has a vertex of (3, -3) ?

- A. y = 5(x - 3)
^{2}- 3 - B. y = 5(x + 3)
^{2}- 3 - C. y = 5(x - 3)
^{2}+ 3 - D. y = 5(x + 3)
^{2}+ 3

**Correct Answer:** A

**Explanation:**

A The vertex form of a parabola is y = a(x - h)^{2} + k, where (h, k) denotes the vertex. Plug in the point (3, -3) into the vertex form to get y = a(x - 3)^{2} - 3. The correct answer is (A).