Find an equation of a parabola with a vertex at the origin and directrix y = -1.5.

a) x = -1/6 y^2
b) x = 1/6 y ^2
c) y = -1/6 x^2
d) y = 1/6 x^2

The answer is A. If you graph it you can see the answer.

Step-by-step explanation:

one that is bigger than 3 1/2

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.