Polynomial Functions Unit Test Item 7
The reflector of a flashlight is in the shape of a parabolic surface. The reflections of all rays from the light bulb to any point on
the parabolic surface will all be parallel to each other. The casting has a diameter of 16 centimeters and a depth of 8
centimeters. Find the focus to determine how far the light bulb should be placed from the vertex (1 point)
Item 8
Item 9
Item 10
The light bulb should be placed
centimeter(s) from the vertex
al
Item 11
Item 12
Item 13
Item 14
Item 15
ot
Item 16

the k side

step-by-step explanation:

plese mark mde brainliest!

im pretty sure its

(8,15)

step-by-step explanation:

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.