Here is my question: 2n + 4 = 4n + 1 - 2n
2 answers:
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A one-to-one function must pass both the vertical and horizontal line tests.
The vertical line test shows it’s a function.
The horizontal line test shows it’s one-to-one.
If you look at the graph of this function (the red graph is the function, the green line is the horizontal line test):
it passes the vertical line test (so it’s a function), but it does not pass the horizontal line test.
Therefore it is not one-to-one
The vertical line test shows it’s a function.
The horizontal line test shows it’s one-to-one.
If you look at the graph of this function (the red graph is the function, the green line is the horizontal line test):
it passes the vertical line test (so it’s a function), but it does not pass the horizontal line test.
Therefore it is not one-to-one
Answer:
Cyclist A 12 mi/h
Cyclist B 5 mi/h
Cyclist C 9 mi/h
Cyclist D 10 mi/h
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
In this problem the relation between the distance and the time represent a direct variation
Let
y -----> the distance in miles
x ----> the time in hours
The unit rate is the same that the slope or constant of proportionality of the linear equation
<em>Cyclist A</em>
we have
The cyclist can ride 24 miles in 2 hours
The unit rate is equal to divide the total distance by the total time
so
<em>Cyclist B</em>
Looking at the table
For x=1 h, y=5 mi
substitute
<em>Cyclist C</em>
we have
Remember that the unit rate is equal to the slope
so
<em>Cyclist D</em>
Looking at the graph
For x=1 h, y=10 mi
substitute