Which alegebraic represents the rule for the table ?
2 answers:
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we have
the equation of the line is
the points are
<u>Method 1</u>
we know that
A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form or
In this problem we have a direct variation
The constant of proportionality k is equal to the slope of the line
so
therefore
<u>the answer is</u>
the slope of the line is equal to
<u>Method 2</u>
we know that
the formula to calculate the slope between two points is equal to
we have
substitute in the formula
therefore
<u>the answer is</u>
the slope of the line is equal to