Question
Here's the word problem:
You have a coupon for $50 off your camera purchase of $100 or more at Camera World.
Write a function relating a camera's purchase price after coupon, y, to the retail price, x.
Give the domain of this function.
Here is what I have so far:
y = price after coupon x = original price
x - y >= 100 NOTE: >= is "greater than or equal to".
I don't think I wrote the function correctly. Also, I can't seem to remember what the "domain of a function" is.
Any help you could provide is very much appreciated.
You have a coupon for $50 off your camera purchase of $100 or more at Camera World.
Write a function relating a camera's purchase price after coupon, y, to the retail price, x.
Give the domain of this function.
Here is what I have so far:
y = price after coupon x = original price
x - y >= 100 NOTE: >= is "greater than or equal to".
I don't think I wrote the function correctly. Also, I can't seem to remember what the "domain of a function" is.
Any help you could provide is very much appreciated.
Answers
y = x - 50
domain x>100
domain is the part of the x axis where the function is valid
for example the function
y = 1/x
domain is 0< x <0
but does not include x = 0
where it is undefined
domain x>100
domain is the part of the x axis where the function is valid
for example the function
y = 1/x
domain is 0< x <0
but does not include x = 0
where it is undefined
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