You buy a $75 ipod and get a 10% discount. What is the sale price?
1 answer:
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The answer is the first option: I, II and III.
The explanation is shown below:
1. By definition, there is a joint variation when a variable depends on two or more different variables. Therefore, you can express it as following:
Where and
are the variables and
is the constant of proportionality.
As you can see, is directly proportional to
and
.
2. Keeping the information above, you have:
I) (
varies jointly with
,
and
.
II) (If
is the constant of proportionality,
varies jointly with
and
).
III) (
varies jointly with
and
.
Answer:
The answer is:
Step-by-step explanation:
❃Incase you forgot what the linear equation formula is ☟
❃Incase you also forgot, The is what the slope formula is ☟
➊ First: We are going to be solving for the slope.
➋Second: We find the y-intercept.
➌Third: Plug in.