Question

SOMEONE PLEASE HELP WITH THIS QUESTION!! I WILL MARK YOU AS BEAINLIEST ANSWER!!

Answer 1

Answer:

An parabola has focus at( -43/4, 4) and directrix x = -13/4.

The vertex is exactly between focus and directrix, then:

=> vertex ([(-43/4 + (-13/4)]/2, 4) = (-28/4, 4) = (-7, 4)        

The directrix x = -13/4 is a vertical line, this parabola is thus a sideways parabola (that looks left or right, not upward or download). It has the equation form as following:

4p(x – h) = (y – k)^2

with vertex(h, k) and p is distance from vertex to directrix

p = |-7 - (-13/4)|  = |-15/4| = 15/4.

However, the vertex (-7, 4) is on the left of directrix x =-13/4, then this parabola faces left. Therefore p should be -15/4, not 15/4

=>4*(-15/4)*(x - (-7)) = (y - 4)^2

=>Solution: -15(x + 7) = (y - 4)^2

Hope this helps!

:)

Answer 2

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