Question

without actually solving the simultaneous equations given below, decide which simultaneous equations have unique solution, no solution or infinitely many solutions: 3x-7y=15;6x=14y+10.​

Answer 1

For 3x−7y=15:

x −9 −2 12

y −6 −3 3

For 6x=14y+10:

x −3 4 11

y −2 1 4

As the graph shows, both lines are parallel, it has no solution.