Final answer:
The equation for the graph with a slope of 5 and y-intercept of 10 is y = 5x + 10. This can represent the cost 'y' as a linear function of the number of songs 'x' downloaded on an iPod, assuming each song costs $5 and there's a $10 starting credit.
Step-by-step explanation:
The equation of a linear function with a slope (m) of 5 and a y-intercept (b) of 10 is given by the formula y = mx + b. Therefore, the equation for our graph is y = 5x + 10. To create a scenario involving this linear function, suppose you are downloading songs to your iPod.
Let's say each song costs $5 and you already have a $10 iTunes gift card balance. If 'x' represents the number of songs you download, and 'y' represents the total cost, the relationship between the number of songs downloaded and the total cost can be expressed with our linear equation.