Question

-x +4y= -9
y=2x+6

Is (2,3) a solution of the system ?

Answer 1

no

Explanation:

easy way to find out...just do some subbing...but remember, for it to be a solution to this system, it has to satisfy both equations.

(2,3)...x = 2 and y = 3

-x + 4y = -9

-2 + 4(3) = -9

-2 + 12 = -9

10 = -9 (nope).....no need to check the other one because it does not satisfy this one.

It is NOT a solution