Answer:
a)

b) l=19.2 units
Step-by-step explanation:
a)Let F represent the force and l represents the length of the wrench handle.
Then inverse variation relation is:

When we introduce the variation constant, we get:

From the question when F=96, l=12


The equation is

b) If a person can only exert 60 pounds of force on a wrench,then



Hence the length of the wrench must be 19.2 units
From the given step function in this item above, we can see that the value of y in the given equation is dependent in the values of x but with certain step-wise arrangement. As we can see, for x = 1, the value of y is equal to 0. Thus, the answer is the first choice.
Answer:
The biggest differentiating factor between a function and NOT a function
is that a function gives only one output for any given input. so no matter how many times you use the same value in the function, you will get the same output
A relation which is not a function will have 2 or more outputs for a single input
So if we have more than 1 similar input values in the table and given them different outputs, the relation will NOT be a function
I will take 2 similar inputs "1" and give them different outputs, the rest of the table can be randomly filled
x y
1 4
3 7
5 9
1 2
Answer:
8y= -16
7x= -7
so 1y =-2 meaning 8y is -16 + 7x and if 1x is -1 then it is -7 altogether so if you add -16 and -7 you get -23