A line passes through the points (- 4, 7) and (5, - 8) . What is the slope of the line?
2 answers:
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Given:
The boundary line of an inequality is:
The solution set contains (0,0).
To find:
The inequality.
Solution:
The boundary line of an inequality is
Since (0,0) is in the solution set, therefore (0,0) satisfies the required inequality.
Taking LHS, we get
Substitute x=0 and y=0.
The right hand side of the given equation is 6.
We know that,
The boundary line is not a dotted line, it means the points on the boundary line are also included in the solution set. So, the inequality sign must be .
Therefore, the required inequality is .