<PRE><B>Question 1181340</B>
&lt;br&gt;
A linear equation is of the form&lt;br&gt;
y = mx+b&lt;br&gt;
where m is the slope (rate of change of y with respect to x) and b is the value when x is 0.&lt;br&gt;
With the given information, the cost increased by $650-$350=$300 when the number of units produced increased by 200-100=100.  So the rate of change of cost (y) with respect to x (number of units) is 300/100=3.&lt;br&gt;
So the equation is of the form&lt;br&gt;
y = 3x+b&lt;br&gt;
Use one of the two given data points to determine b.&lt;br&gt;
When production was 100, the total cost was $350:&lt;br&gt;
350 = 3(100)+b
350 = 300+b
b = 50&lt;br&gt;
ANSWER: y=3x+50 is the linear equation relating the total cost to the number of units produced.&lt;br&gt;
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