Question

State with reason whether the point (3, –2) will lie on the graph of the equation 5m – 3n = –21.

Answer 1

L.H.S. = 5m – 3n

= 5(3) – 3(–2)

= 15 + 6

= 21

≠ R.H.S.

∴ The point (3, –2) does not lie on the graph of 5m – 3n = –21.