Q. What is the focus of the parabola y=9x2+1?Simplify any fractions.(______,______)
Identify vertex form: Identify the vertex form of the parabola. y=9x2+1 is in the form y=a(x−h)2+k, where a=9, h=0, and k=1.
Calculate value of p: Calculate the value of p using the formula p=4a1.p=4×91p=361
Determine focus: Determine the focus of the parabola using the vertex (h,k) and the value of p. Since the parabola is vertical, the focus is (h,k+p). Focus = (0,1+361) Focus = (0,3637)
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