Wendy has taken two tests with scores of 77 and 80. To get an 82 average, what must her grade be on the third test?
Please help

89

Step-by-step explanation:

Given that Wendy took 2 tests and scored, 77 and 80 respectively, let x represent the grade of Wendy's third test.

To get an average grade of 82, let's generate an equation to find x (Wendy's grade on her third test).

Average grade = sum of all 3 grades all over 3

Multiply 3 by both sides

Subtract 157 from each side of the equation

Wendy must score 89 on her third test to have an average of 82.

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)