Eight less a number is less than or equal to five

The polygon tool to draw a rectangle with a length of 5 units and a height of 3 units. one of the sides of the rectangle falls on line ab , and the rectangle has a vertex of a. each segment on the grid represents 1 unit.

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

If u good at math hit me up on insta or sum @basic_jaiden or @ and