How do you expand this?
y²+2/5 × xy​

-18+20=2 so (2,4) is a solution

Step-by-step explanation:

to be able to figure out if the ordered pair is a part of solution, only need to input the x value and see if you can get the output which is y

-9x+5y=2     for (4,2)

-9(4)+5(2) does not equal 2

for :(3,4)

-9(3)+5(4)=2

-27+20 does not equal 2

for (4,3)

-9(4)+5(3)=

-36+15 no solution

for : (2,4)

-9(2)+5(4)=

-18+20=2 so (2,4) is a solution