A relation is a function if the value in its Domain does not occur more than once. This means each domain value is paired with exactly one value of range.
In the given scenario, the domain is the students (e.g name of a student) and the function returns the date of birth of the student. A student can have only one date of birth. So it is not possible that a value in Domain(i.e. a student) is paired with more than one date of births.
Therefore, we can conclude that the given relation describes a function.
Answer:
Option 1 and option 5.
Step-by-step explanation:
The given graph is a downward parabola. It means the value of function increases and after reaching its maximum point the value of function decreases.
Scenario 1 : The height of a stone shot by a catapult reaches a maximum height and then falls on the ground.
The graph of this scenario is a downward parabola. Therefore option 1 is correct.
Scenario 2 : The speed of a car increases constantly by 10 miles per hour.
The graph of this scenario is a straight line with slope 10. Therefore option 2 is incorrect.
Scenario 3 : The radioactivity of a substance decreases by 10% every year.
The graph of this scenario is an decreasing curve which represents an exponential function. Therefore option 3 is incorrect.
Scenario 4 : The amount of money in an account decreases for a few months and then increases.
The graph of this scenario is a upward parabola. Therefore option 4 is incorrect.
Scenario 5 : The sale of product increases at first and then decreases.
The graph of this scenario is a downward parabola. Therefore option 5 is correct.
Therefore, the correct options are 1 and 5.
Answer:
Days vary for Big Al, his waiting times are both small and large on different visits. Where Trails end seems a more closer number group range. This may be a bias time calculation as one of the restaurants may be more slower or busier at a different time in the week, we are not told the times but 8 visits within one week may not be a true picture as restaurants are open 6-7 days and open days and evenings. 2. Both restaurants have a total mean number of 8, it seems a fair equal amount of visits as the table shows us a waiting scores total 120/8 =8
Step-by-step explanation:
Answer: 2
Step-by-step explanation:
The product of 4*4= 16
The product of 4+4= 8
The quotient of 16÷8=2
Hope this helps
Answer:
D = {-2≤x≤4}
R = {0≤x<2}
It is a function
Step-by-step explanation:
