Answer:
The Answer is D.) -1/2
Step-by-step explanation:
I just took the test and the answer was -1/2
(5)x19.80=y
(5)x19.80=99
Because the only info given is 19.80 and 5, those are the only definate variables-the total cost is unknown so it is represented by y. To find the total cost, one must multiply the cost of each tickets with how many tickets were bought, represented by (5)x19.80 [the 5 is in parenthesis because it is the independent variable, meaning it changes]. When multiplied together, the equation equals 99, or $99.
Answer:
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form 
or 
In a direct relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
step 1
Find the value of the constant of proportionality k
we have
the ordered pair (2, 7)
so
-----> 
therefore
The relation is
----->
Answer:
4(0.25a + b - 6) = 0
Step-by-step explanation:
The second relation is a function.
For a relation to be a function, each x-value can only have a singular corresponding y-value. Since all other relations feature x-values with multiple y-values, the second relation is a function.
