Which graph best represents a line with a y-intercept of 4 and slope -3?

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

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.

Iknow the answer but the calculator doesn't seem to give the right one