Question 71330
Set them equal to one another and solve for x.
{{{cross(2x-2x)+1=cross(2x-2x)+8}}}Subtract 2x from both sides
{{{1=8}}}This answer tells us that there is no solution. Also since there is no solution, the lines do not intersect.
{{{graph( 300, 200, -5, 5, -5, 5, 2x+1, 2x+8 )}}}
Notice these two lines are parallel and never cross each other.