Question

Which of the following points is a solution to the following system of equations?

x + y = 1
3x – y = 3

A.
(3, 0)
B.
(5, –1)
C.
(1, 4)
D.
(1, 0)

Answer 1

A. 3 + 1 = 4 nope (so its not the first one obvously)
B. 5 + (-1) = 4 (not this one)
C. 1 + 4 = 5 ( not this one)
\[\ \huge D. 1+0 = 1 ; 3 (1) - (0) = 3 \ This\ one. \]

Answer 2

all you needed to do is plug in the answer choices.