Whats the answer can you show work?

Ineed to know the answer right now! !

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.