Answer:
A
Step-by-step explanation:
Remark
The trick is to solve the inequality. The last step is very tricky. Be careful with it.
Equation
15≤ -3x + 6 Subtract 6 from both sides
15-6 ≤ - 3x + 6 - 6 Combine
9 ≤ -3x Divide by - 3
9/-3 ≥ -3x/-3 Notice what happened to the less than or equal to
-3 ≥ x
Now there are 2 problems remaining.
1) why did the inequality turn around?
It turned around because when you divide by a number less than 0, the inequality turns around because the negative numbers work opposite to the positive numbers .
18 > 6
-18 < - 6
2) So which graph is correct.
The largest number that is possible is -3 The arrowhead should be pointing left.
In addition, the circle should be blacked in.
The answer is as you have marked it: A
