Question

which ordered pair is the solution of this equation
-2x - 3y=19
a.-5,-4
b. -5,-2
c. -2,-5
d. -3,-5

Answer 1

plug each 'solution' into the original problem to solve. ::

-2(-5) - 3(-4) = 10 + 12 = 12 (does not =) 19 so 'a' is not the solution.

-2(-5) - 3(-2) = 10 + 6 = 16 (does not =) 19 so 'b' is not the solution.

-2(-2) - 3(-5) = 4 + 15 = 19 so 'c' is the solution.

-2(-3) - 3(-5) = 6 + 15 = 21 so 'd' is not the solution.

C is your solution.

Answer 2

thank you