Question

Determining Proportionality

Mr. Samuuel Salesman is paid $125 a month. He also earns $50 for every vacuum he sells.

I need to find an equation, a table, and a graph

Answer 1

earnings = $125 + ($50/vacuum)x

Explanation:

This problem is best described by a linear equation whose slope is $50/vacuum and whose y-intercept is $125:

The equation represents the man's total earnings. The independent variable is x, the number of vacuums he sells.

Thus, earnings = $125 + ($50/vacuum)x. As before, the y-intercept is $125 and the slope of the line is ($50/vacuum).

Plot a black dot at (0, $125). Now move 2 units to the right from this dot and from there up by $100 to (2, $225). Plot this new point. Then draw a line through the two points you've plotted.

Table:

x earnings

---- --------------

0 $125

1 $125 + $50 = $175

2 $125 + $100 = $225

and so on.

Answer 2

…………..Y=125+ 50x…………