let's check how much is it after 2 years firstly.
Brian invested the money for 6 years, so now let's check how much is that for the remaining 4 years.
Answer:
yes, the given relation is a function.
Step-by-step explanation:
The given relation is
{(–3, –2), (–1, 0), (1, 0), (5, –2)}
A relation is called function if each element of the domain is paired with exactly one element of the range.
It means for each value of x there exist a unique value of y.
In the given relation for each value of x there exist a unique value of y.
Therefore the required solution is yes and this relation is a function.
That number is the ratio of 578,778,777 to 100,000,000 , so it's rational.
Here's a surprising factoid:
ANY number that you can completely write down on paper with digits...
and a decimal point or a fraction bar if you need them ... is rational.
If you can write it down ... without saying "repeating" or using symbols ...
it's rational.
ANSWER
EXPLANATION
The points
and
lie on the graph of the direct variation function.
We can use these points to determine the constant of direct variation which is also called the constant of proportionality.
This constant of proportionality is the slope, which can be found using the formula,
This implies that,
Since the total earnings E, varies directly as the number of hours worked ,h,we can write the mathematical relation,
The equation of the direct variation function is given by
where k is the constant of proportionality.
We substitute this value to get,