Please help. Which ones do I check.
1 answer:
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Answer:
B. {x| x > 2 or x < -4}
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Step-by-step explanation:
Given
Required
Solve
Start by dividing both sides by 5
Find critical point of the inequality by changing the inequality to equality
Split the above expression
Make x the subject of formula in both
Check the intervals in between the critical points
Set: --- This works in the inequality
Set: --- This doesn't work in the inequality
Set: --- This doesn't works in the inequality
Set: --- This works in the inequality
<em>Hence, the solution is: {x| x > 2 or x < -4}</em>
The point-slope form:
The formula of a slope:
We have the points (-1, 4) and (3, -4). Substitute: