Question

5. Which ordered pair is a solution of the equation y = –5x + 4? (1 point)
(2, 14)
(5, –29)
(3, –19)
(5, –21)

Answer 1

just plug in the pairs and check the answer, for example :
if we use the last answer (5,-21) first number belongs to x second to y so
(-21)=-5(5)+4
-21=-25+4
-21=-21
it is true so that is your answer.

Answer 2

(-)(-)=+
(-)(+)=-
(+)(+)=+
(+)(-)=-
Just in case.