Question

1. Which of the following inequalities should be graphed with a dashed line?Select all that apply.2x – 4y < 12X – 10 > 8X + 7 > - 152 < 15

Answer 1

All the inequalities typed here have either a < or a >

The important CLUE about if the boundary line to be plotted is dotted or solid is:

If the inequality symbol contains an "equal sihn" over impossed like shown below"

`\text{Either }\leq\text{ or }\ge`

Then the line in the inequalty graph must be SOLID.

If the inequality symbol doesn't have the over-impossed equal symbol and it reads just like:

either < or >, then the line must be graphed DOTTED/DASHED.

Then if as you mention the second and the last one have the symbol with the equal sign ( which in fact should read as "larger than or equal to" ar "smaller than or equal to?) then , don't select them (because the associated line shoyld be drawn as a solid line.

Select the two inequalities that have the pure (clean) < or > symbols because those are the ones for which the graph is represented with DASHES.