Question

Solve the inequality and graph the solution.
6f+9≤
–
3
To draw a ray, plot an endpoint and select an arrow. Select an endpoint to change it from closed to open. Select the middle of the ray to delete it.

Answer 1

Solve: 6f + 9 ≤ −3

1. Subtract 9 from both sides: 6f ≤ −12
2. Divide both sides by 6: f ≤ −2

Solution: f ≤ −2 (or in interval notation: (−∞, −2])

Graph: On a number line, put a closed (filled) dot at −2 and draw a ray/arrow extending left from −2 toward −∞.