Question 175586
graph the solution for: 5x =<20
------------
You can never directly graph the solution for an inequality.
You must first graph the solution for its boundary which is 
always an equality.
---------------
Graph 5x = 20 or x = 4 as a vertical line passing thru all points where x = 4.
Shade the half-plane to the left of x = 4 as the graph of the inequality x<4.
========================
Cheers,
Stan H.