Question

Number 20 explain..........

Answer 1

a)


`(2,2)\quad\implies\quad x=2\qquad y=2\\\\2x+y=2\cdot2+2=4+2=\boxed{6}\quad\checkmark`

b)


`(-2,-2)\quad\implies\quad x=-2\qquad y=-2\\\\2x+y=2\cdot(-2)+(-2)=-4-2=\boxed{-6}`

c)


`(3,6)\quad\implies\quad x=3\qquad y=6\\\\2x+y=2\cdot3+6=6+6=\boxed{12}`

d)


`(0,2)\quad\implies\quad x=0\qquad y=2\\\\2x+y=2\cdot0+2=0+2=\boxed{2}`

e)


`(-1,1)\quad\implies\quad x=-1\qquad y=1\\\\2x+y=2\cdot(-1)+1=-2+1=\boxed{-1}`

Only point A = (2, 2) lies on the graph.