Question

Which of the points is a solution to -2x + y = 4?
A. (-2, 4)
B. (0, 4)
C. (2, -2)
D. (2, 0)

Answer 1

We helped you once, time to show some efforts

Answer 2

studying for test but some problems I have no idea what they are talking about

Answer 3

same thing as last time; see what fits

Answer 4

which ordered pair of (x=, y=) makes this equation true?

Answer 5

A

Answer 6

can you prove that it would be "a" ? making that choice is one thing, but proving it is another.

Answer 7

-2x + y = 4

A. (-2, 4) ; so, when (x=-2, y=4) is this equation true?

-2(-2) + 4 =? 4 yes or no?

Answer 8

I think it is yes I just had my paper that i solved the problem on and now I cant find it

Answer 9

then resolve the problem :)

its ok to do things twice

Answer 10

-2(-2) + 4 = 4 how would we solve this?

Answer 11

solve is a bad word for that; how would we determine the truth of this?

Answer 12

-2 * -2 = ?

Answer 13

4

Answer 14

good,

-2(-2) + 4 = 4
4 +4 = 4

what is 4+4 equal?

Answer 15

8

Answer 16

ok

-2(-2) + 4 = 4

4 +4 = 4

8 = 4

does 8 equal 4 make any sense? is it a true statement?

Answer 17

no

Answer 18

then since A makes a false statement, and lies to us; we say that A is NOT a solution

Answer 19

which of the other 3 options will NOT lie to us?

Answer 20

b 0,4 because it doesnt make a false statement

Answer 21

i would agree with that, and I have proof :)

2x + y = 4
0 4
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0 + 4 = 4 ; IS a true statement, therefore this IS a solution