Answer
True.
Work Step by Step
If the coordinates of the given point satisfies the line's equation, then it is on the line.
Substitute the x and y coordinates of the point into the equation to have:
$2x+y=4
\\2(1) + 2 = 4
\\2+2=4
\\4=4$
The coordinates of the point satisfy the equation.
Thus, the point (1, 2) is on the line $2x+y=4$ so the given statement is true.
