Focus has coordinates (0, a)
a = -3
Thus, 4a = 4(-3) = -12
Because a is negative, we know it will be a concave down or concave left parabola. Hence, A and D can be eliminated. And we know it has to be B because the directrix is the horizontal line y = 3. Hence, the equation of the parabola becomes:

or
Answer:
Step-by-step explanation:
1.

2. q-p = 3p +5
q = 4p+5
4p = q-5
p = (q-5)/4
3. y = 2a -b

Answer: B!
Step-by-step explanation: The best way to warm up before taking part in physical activity is to perform low-intensity, dynamic movements that are similar to the main type of activity that you will perform.
Answer:
by dividing 6,400 by 2,000
Step-by-step explanation:
We know that 2000 pounds equals 1 ton
To convert 6400 pounds to tons, we need to
6400 pounds * 1 ton/2000 pounds
Divide 6400 by 2000