The variables x and y vary directly. When x = 30, y = 5. Which of the following equations represents this relationship?

Y = (1/30)x

Y= x - 25

Y= 6x

Y= (1/6)x

3questions show how you solved the problem 1. subtract & simplify (–y2 – 4y – 8) – (–4y2 – 6y + 3) 2.multiply and simplify 2x2y3z2 · 4xy4x2 3.multiply and simplify (x – 4) (x2 – 5x – 6)