Question

Where would I start in order to:
Graph the linear equality 4x-y<=5

Answer 1

graph the line
\[y=4x-5\] and then shade above
http://www.wolframalpha.com/input/?i=4x-y%3C5

Answer 2

I would first isolate the y
y >= 4x - 5

Then graph this line

Test some x-values to see which side (left or right) doesn't work

Shade the graph