Question

Which pairs are solutions to the equation?

5xy + 9 = 44

A.
(4, 11) and (2, 3)

B.
(7, 1) and (2, 3)

C.
(1, 7) and (4, 11)

D.
(1, 7) and (7, 1)

Answer 1

Plug in your answer choices into the equation : )
A.
5(4)(11) + 9 = 44 true or false?
5(2)(3) + 9 = 44 true or false?

Answer 2

5(4)(11)+9=44 False?
5(2)(3)+9=44 False?

Answer 3

Correct so we know its not A
B.
We can elminate B because the 2nd coordinate is (2,3) we know its false

Answer 4

Let's try C
5(1)(7) + 9 = 44 <--t or f?
5(4)(11) + 9 = 44 <---t or f?

Answer 5

5(1)(7)+9=44 True?
5(4)(11)+9=44 False?

Answer 6

Correct so we know its D
We know that (1,7) is correct that leaves us with the 2nd coordinate lets check
5(7)(1)+ 9 = 44
t or f

Answer 7

True.

Answer 8

Good so we know D is the answer! =)

Answer 9

Thankssss cx

Answer 10

np =P