Pls suggest some web sites to understand the following maths ..:?

Question

1. The graph of x + y ≤ -6 corresponds to the solid line / dashed line x + y = -6 and the half-plane above / below it or to the left/right of it?

2.The graph of -7 < 4x − 3 ≤ 7 has: open / closed circle on -1 with shading to the left / right, and open /closed circle on 5/2, with shading to the right/ left/ in between?

Can any one explain these terms / suggest web sites for these?

Answer 1

try

http://www.algebra-online.com/graphing-i...