Question

The point (5, 7) lies on the line -2x + 8y = 46. Determine if this point is a solution of the system

-2x + 8y = 46

x – 2y = -9

Answer 1

To check if a point is a solution, we can substitute the point to LHS of the equation and check if the result equals to RHS.
For (5,7) and x-2y=-9
LHS=5-2(7)=-9
RHS=-9
LHS=RHS
Therefore, (5,7) lies on x-2y=-9
Hence, it is a solution of the system.

Answer 2

thanks for helping me figure this out cocotsoi but what do you mean by RHS? and LHS?

Answer 3

RHS= right hand side
LHS= left hand side

Answer 4

okay I see....your super!!

Answer 5

Thank you :D