8. Ms. Lisa teaches three sections of Algebra 2 with 80 students total. The mean score for the last test was 78.
Which of the following is not true.
A. The average score on the last test for Ms. Lisa's students was 78
B. Every student scored a 78 on the last test.
C. If every student scores a 78 on the last test, then the total score on the test would be the same as the
actual total score on the test
D. All of the above are true

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.