Posted by **Tim** on Friday, March 21, 2008 at 6:15pm.

compound inequality

write the solution set using interval notation and graph

-7x+1>=15 or 5x+3>=-17

-1 -1 -3 -3

-7x/-7>=14/-7 5x/5>=-20/5

x>=-2 x>=-4

{-2,sideways8) {-4,sideways8)

On my graph I have a { at -2

Does someone know how to do this?

- Algebra -
**Reiny**, Friday, March 21, 2008 at 6:24pm
-7x+1>=15

-7x ≥ 14 now divide by -7 and **switch the inequality sign**

x ≤ -2

or

5x+3>=-17

5x ≥ -20 divide by 5

x ≥ -4

so x ≤ -2 OR x ≥ -4

Since you used OR the results would cover the entire number line, and the solution would be any real number

(try any number, it would satisfy either the first OR the second of your inequalities)

Are you sure the two statements weren't separated by the world "and" ?

## Answer this Question

## Related Questions

- Algebra II - I need some help with some problems as well as need some checked. ...
- algebra - Solve each inequality. State the solution set using interval notation ...
- algebra - solve the inequality. Express the solution using interval notation and...
- algebra - Solve the following rational inequality. Write the solution in ...
- algebra - Solve the following rational inequality. Write the solution in ...
- Math inequalitites - Hi, I need some help with some inequalitites. Thanks!! Use ...
- MATH- Algebra 2 - x^2-6>-5x 6x^2-5x+1<0 Solve (using any method), write ...
- algebra - solve the inequality and write the solution set using interval ...
- math - solve the polynomial inequality and graph the solution set on a real ...
- math - solve the polynomial inequality and graph the solution set on a real ...