Question

graph
1/2x<4

Answer 1

You have to mulitply by the reciprocal on the other side giving:
1/2x < 4
x < 4 x 2/1
x < 8
When you graph this on a number line, you would make a hollow dot at 8 and a line shooting to the left from that point =)

Answer 2

2(1/2)x<4(2) multiply both sides by 2 to get rid of the fraction:
x<8
on a number line you circle the number 8 and draw a line from the circle to the left.