Question

To determine if an ordered pair is a solution to a system of linear equations in two variables, __________.
A.
substitute the coordinates of the ordered pair into either equation to see if it produces a true statement
B.
substitute the coordinates of the ordered pair in both equations to see if it produces a true statement for each
C.
substitute the coordinates of the ordered pair in the first equation to see if it produces a true statement
D.
substitute the coordinates of the ordered pair in the second equation to see if it produces a true statement

Answer 1

Just make a wild guess. What do you think?

Answer 2

B

Answer 3

Good guess. The solution is the point of intersection of the two lines. So it is a point of both lines. So it must "fit" the equation of both lines.