Answer:
28
Step-by-step explanation:
8c - y
8( 3) - (- 4)
24 + 4
28
The 4 in 42,672 is 40,000
And the 4 in 37,426 is 400
The answer is 100
According to the definition, is a parabola is in the standard form of (x-h)^2<span>=4p(y-k), then the directrix is y=k-p. In this case, the parabola function is x^2=8y, so h=0, p=8/4=2, k=0. Plug the values of h, p, k, into y=k-p, the directrix is y=-2.</span>
