Question

The equation of the parabola with focus \((2,0)\) and vertex \((1,0)\) is

• A. \(y^2=4x\)
• B. \(y^2=4x-4\)
• C. \(y^2=4(x+1)\)
• D. \(y^2=-4(x-1)\)

Hint:

For a parabola opening along positive \(x\)-axis, use \((y-k)^2=4a(x-h)\), where vertex is \((h,k)\) and focus is \((h+a,k)\).

Answer 1

The Correct Option is B