Which is the equation of a parabola with a directrix at y = −3 and a focus at (−2, 3).
y = one twelfth(x − 2)2
y = one twelfth(x + 2)2
y = −one twelfth(x + 2)2
y = −one twelfth(x − 2)2

Urgent need asap △abc is similar to △xyz. also, side ab measures 6 cm, side bc measures 18 cm, and side xy measures 12 cm. what is the measure of side yz ? enter your answer in the box.