Calculate the equation of a line passing through C(4;7) and D(9;17)
1 answer:
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The answer is subtract.
For example:
For example:
First of all, expand the left hand side:
Sum like terms:
Add 3 to both sides:
Subtract 3x from both sides:
So this is the solution. Every number smaller than 8 (excluded) is part of the solution of this inequality.