Solve by elimination - show your work! i need to know which method can be used for this specific problem. 5x + 4y = 12 3x - 3y = 18

elimination, namely we'll eliminate a variable.

let's notice say 4y and 3y in the y-column, now, if we multiply 3*4y = 12y, and if we multiply 4*-3y = -12y, and those 12y-12y cancel each other out, so we'll do that.

y=mx+

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.