Question

Solve each inequality. Graph the solutions.
`x + 7 \leqslant 9`

Answer 1

`z\text{ + 7 }\leq9`

this is equivalent to:

`z\text{ + 7 - 7 }\leq9\text{ -7}`

this is equivalent to

`z\text{ + 0 }\leq9\text{ -7 }`

this is equivalent to

`z\text{ }\leq2`

so the interval that represents the last inequality is :

`(-\infty,\text{ 2}\rbrack`

graphically this interval is represented by: