Use the values in the table to write a quadratic equation in vertex form, then write the function in stand form. X Y
-1 8
0 3.5
1 2
2 3.5
3 8

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

The function show two sisters' savings account and the rate at which they plan to deposit money

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).