Question

What is the solution set of -9x

Answer 1

B. x≥-3

Explanation:

To solve this problem, first you have to isolate it one one side of the equation.

First, multiply -1 from both sides.

(-9x)(-1)≥27(-1)

Solve.

27*-1=-27

9x≥-27

Next, divide by 9 from both sides.

9x/9≥-27/9

Then, solve.

-27/9=-3

Therefore, the correct answer is x≥-3.

Answer 2

For this case we must find the solution of the following inequality:

`-9x \leq27`

If we divide by -9 on both sides of the inequality we have:

`-x \leq \frac {27} {9}\\-x \leq3`

If we divide by -1 on both sides of the inequality, the sense of it changes:

`x \geq-3`

ANswer:

Option B