Would appreciate your sharing actual inequalities to graph. Otherwise the topic is a bit broad.
Supposing you wanted to graph the inequality x<5:
Draw a dashed line through x=5, and then shade the area to the left of this line.
Supposing you wanted to graph the inequality x less than or equal to 5:
Draw a solid line through x=5, and then shade the area to the left of this line.
Please, respond with an inequality that you want to graph, and I'll help you with it.
If y=7 and x=2 and you change x to equal 5, y would now be 10.
x=5
y=10

if you have already covered slopes, you could also get it that way, in fact is simpler that way.