1. The equations that I can think of are,
3 + 1 = 11 - 6
and
8 - 1 = 6 + 1
2. An example of equation that uses the variable x,
6x - 2x = 8
It may be required of you to perform certain steps in order to determine the value of x.
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:
21
Step-by-step explanation:
Add all the numbers together
6+8+2.5+2.5+2=21
Alright, so since anything can be squared, the domain is (-inf, inf)