Determine which of the mapping diagrams represents a relation that is not a function.
1 answer:
Answer:
See attachment
Step-by-step explanation:
The relation that is not a function is shown in the attachment.
For a relation to be a function, it must be either one-to-one or many-to-one.
The relation shown in the attachment is one-to-many relation hence it is not a function.
This is because -5 corresponds to -4 and 3,making the graph of this relation to fail the vertical line test.
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Answer:
It would take Tom 8 hours alone
Step-by-step explanation:
We are looking at this basic equation:
Tom + Shirley = 8 hours
Tom takes x hours to cut the grass; this means that 1/x of the job gets done in 1 hour
It takes Shirley 3 times as long as Tom, so it takes her 3x hours to cut the grass; this means that 1/3x of the job gets done in 1 hour
If the total number of hours it takes them to do the job is 6 hours; this means that 1/6 of the job gets done in 1 hour
Looking back at the original basic equation, we will fill in our info:
We can solve for x by first finding the LCD and eliminating the denominators. The LCD is 6x, since all the denominators go into 6x evenly.
We will multiply the rational equation through by the LCD:
Dividing each denominator into the LCD gives us:
6 + 2 = x so
x = 8
This means that it takes Tom 8 hours to do the job alone. It would take Shirley 24 hours alone. Ugh.
Answer:
Step-by-step explanation: