Question

ASAP (Medal & Fan) This doesn't make sense to me (Pic included)

Answer 1

im confused

Answer 2

what they really mean is
test around the values from all choices, see which one works

let''s test the 1st one, A)
\(\bf 5x-2y = 10\\
\color{blue}{(-1, 5) = (x, y)}\\
5(-1)-2(5) = 10\\
-5 -10 = 10\\
-15 = 10\\
\text{well, we know that}-15 \ne 10\)

so that EQUATION didn't work, thus set in A is NOT A SOLUTION

now test B)

Answer 3

b is -5 @jdoe0001

Answer 4

-5 = ?

Answer 5

so yes, -5 = 10
but we know that \(\bf -5 \ne 10\)
so that isn't a solution either, try C)

Answer 6

its C @jdoe0001

Answer 7

yeap, 0-2(-5) = 10
10 = 10

thus C is a solution :)