Which of the following numbers is irrational?

-0.3

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

Could someone me with this question i’ve been stuck on it for 20 minutes

The discrete random variables x and y take integer values with joint probability distribution given by f (x,y) = a(y−x+1) 0 ≤ x ≤ y ≤ 2 or =0 otherwise, where a is a constant. 1 tabulate the distribution and show that a = 0.1.2 find the marginal distributions of x and y. 3 calculate cov(x,y).4 state, giving a reason, whether x and y are independent. 5 calculate e(y|x = 1).