Question Detail
Question
Given a circle with centre (3, -2) and radius 4, what is its parametric equation for x?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Using x = -g + r cos θ, with centre (3, -2) meaning -g = 3, so g = -3, and r=4. Substituting gives x = -(-3) + 4 cos θ, which simplifies to x = -3 + 4 cos θ.
Hint
The centre (3, -2) means -g = 3, so g = -3. Use the formula x = -g + r cos θ.