If \(x \geq 0\) and \( y \geq 0\), how many lattice points does the line \(y = -2x + 18\) pass through? (A lattice point is a point with integer coordinates.)
When x = 0 , y = 18
When x = 9, y = 0
The line passes through a lattice point for every two units it rises from right to left
So......the number of lattice points is 1 + [ 18 - 0 ] / 2 = 1 + 18/2 = 1 + 9 = 10
