By kevin stojanovski and alex madoun
Subsitution and Elimination
2x + 3y (10 - x) = 24
x +y = 20
1)The best one for us was substitution because it allowed us to plug in one equation to a variable and we could solve what x is then plug it in to an equation and find what I y.
Also we did elimination and we had make them even so we could eliminate one than we had to find the x or y and then we had to plug it in to another equation so we could find the other variable.
2) Plugging the variables in is more efficient than graphing because you are not sure if it is at the exact point.
3) Graphing was not preferred because it could me incorrect if you drew it out and there could be many mistakes and you have to find y= mx+b form.