SOLUTION: For each problem, use meaningful variables to write a linear function to model the situation. Then interpret the slope and y-intercept in words. Identify which variable would be

Question 1182788: For each problem, use meaningful variables to write a linear function to model the situation. Then interpret the slope and y-intercept in words. Identify which variable would be on the horizontal axis and which one would be on the vertical axis.
a) Model the cost if you buy an iPod for $200 and download songs for $1.29 each.

b) Model the weekly salary a salesman earns if his salary is a combination of his base salary and commissions on his sales. His base weekly salary is $500 and he makes $50 for each sale.
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
y = 200 + 1.29 * x
y = total cost.
x = number of downloaded songs.
200 = cost of ipod
1.29 = cost of each downloaded song.

y = 500 + 50 * x
y = total compensation.
x = number of sales.
500 = base salary per week.
50 = compensation for each sale.

the value of y in both cases is on the vertical axis.
the value of x in both cases is on the horizontal axis.

here's what each graph looks like.
first the ipod and songs.
second the base salary and commission

RELATED QUESTIONS
Write a linear equation in slope-intercept form to model the situation: An internet... (answered by rfer)

Help, I am trying to help my daughter with her homework, don't know what I'm doing. Hope (answered by stanbon)

a) There is a linear relationship between the wind speed, s, in mph, for hurricanes and... (answered by ankor@dixie-net.com)

a) There is a linear relationship between the wind speed, s, in mph, for hurricanes and... (answered by josgarithmetic)

Please help me with this one. Thank you so much! Suppose that y represents the average (answered by Boreal)

The following situation can be modeled by a linear function. Write an equation for the... (answered by stanbon)

Please help me solve this word problem: In 1996, the cost of a specific product is 72.95. (answered by stanbon)

The population of a town was 12500 in 1990. Each year the population decreased by an... (answered by Cromlix)

Please help me out. Thank you! A speeding ticket is $100 plus $5 for every 1 mph over... (answered by addingup,MathTherapy)