Question

Reuben is a software salesman. His monthly salary is $2500 plus an additional $60 for every copy of History is Fun he sells.

Let S represent his total salary this month (in dollars), and let N represent the number of copies of History is Fun he sells. Write an equation
relating S to N, and then graph your equation using the axes below.
Equation:
3000 Ls
1750-
1500
1000+
750-
250-
0=0
S
X
F
5

Answer 1

The equation relating S to N is S = 60N + 2500. The graph of the function can be seen below.

Graph of a linear equation.

The graph of a linear equation is a straight line graph. The general formula for a linear equation is y = mx + b. The slope (m) of the linear function shows the steepness of the graph. The y-intercept(b) is the value of the y-axis when x is zero.

From the given equation,

• Let represent S as total salary, and;
• N as number of copies of History.

The equation of the total salary as a function of number of copies sold can be represent as:

S = 60N + 2500