评论
打印
Mathematics>Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
y=x+a
y-x+a
In the system of equations above, a is a positive constant. If the system is graphed in the xy-plane, which of the following best describes the two lines?
A.Both equations represent the same line.
B.The lines are parallel.
C.The lines are perpendicular.
D.The lines intersect but are not perpendicular.
