Question

Find m , if x= 2, y= -1 is a solution of mx - 2y =15

Answer 1

Answer:

mx-2y=15

m(2)-2(-1)=15

2m+2=15

2m=15-2

2m=13

m=13/2

m=6.5

Answer 2

Answer:

mx -2y = 15

m(2) - [2×(-1)]=15

2m+2=15

2m=15-2

2m=13

m=13/2

m=6.5