A salesperson's commission varies directly with sales. For $1000 in sales, the commission is $85. What is the commission for $2300 in sales?
Could you use the method in Problem 3 to solve this problem?
Yes; you could solve this problem by using the proportion
Step 1
Step 2 Write the direct variation for the situation and find the commission when sales = $2300.
The commission for $2300 in sales is $195.50.
The graph of a direct variation function is always a line through the origin.
What is the graph of each direct variation equation?
x | y |
---|---|
4 | 3 |
8 | 6 |
12 | 9 |
x | y |
---|---|
|
4 |
|
2 |
1 |
|
What x-values should you use to make a table of values?
The constant of variation is a fraction. Use multiples of the denominator for x. This ensures integer values for y.