College Algebra (6th Edition)

(a) $x + 2y = 2$ when ($4, -1$)? $$(4) + 2(-1) = 2$$ $$4 - 2 = 2$$ $$TRUE$$ (b) $x - 2y = 6$ when ($4, -1$)? $$(4) - 2(-1) = 6$$ $$4 + 2 = 6$$ $$TRUE$$