Linear combination is a system of finding x and y coordinates. it is just as easy as 1, 2, 3.
the first step is to find one or both equations by a constantto obtain a coefficient... in plain english this simply means you need to is to eliminate a variable by multiplying by a numer to cancel both out. |
WHEN YOUMULTIPLY TO CANCEL THE VARIABLES YOU MUST MULTIPLY ALL OF THE NUBERS ON THAT SAME LINE. |
2x-4y =13
4x-5y =8
multiply by -2 to cancel out the x
-4x+8y =-26
-4x-5y =8
3y =-18
y =-6
now that you have found y you can place it back into the problem and solve for x.
you final points should be
(-11/2, -6)