Using the notation "a(x) =..." corresponds to which of the following?

Function and equation
Function only
Equation only
Or neither

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points