Algebra pls
x + y = 3k x - y = k the solution of the system shown is
(0, 2k)
(2k, 0)
or (2k, k)

Find the value of x. give reasons to justify your solutions! c ∈ ae

Which value of y will make the inequality y< -1 false?

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4