How do you write 5x - 4y = 1 in slope intercept form

In which form is the following function written? y = - 2(x – 3)(x + 5)

A. 15 degrees b. 45 degrees c. 30 degrees d. 60 degrees

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).