Carl has three lengths of cable,5/ yard long,1/4 yard long, and 2/3 yard long which two pieces make a length at least 1 yard or closest to 1 yard

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.