Answer to part (b)
y = 12000x
Step-by-step explanation:
This function represented in the graph is a linear equation. Since the function passes through the origin (0,0) we can assume that y = mx for some number <em>m</em>.
According to the graph, the function passes through the coordinate (2,24000)
the <em>2</em> in the cooridnate represents the x value, and the <em>24000</em> represents the y value. Since the function passes through the origin we can find the number <em>m</em> by dividing the y value of the given cooridinate by the x value of the same cooridinate
m = 24000/2
which can be simplified to
m = 12000
Therfore the line on the graph is a representation of y = 12000x
This equation can be used to solve part (c) by plugging in 10 as the x value, this will return, 120,000
NOTE:
The method which was used to find the function only works if the graph passes through the origin.
