Tell whether the relation is a function.
2 answers:
Answer:
It is not a function.
Step-by-step explanation:
A function is a relation in which each input x has only one output y.
One visual way to tell the difference is to plot the relation and use the vertical line test.
If a vertical line for a given value of x passes through more than one point, the relation is not a function.
We see in the diagram that the line x = -3 includes (-3,0) and (-3,4), so the relation is not a function.
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To find the answer, set up an equation:
Using this set up we can cross out the units that are on opposite sides of the proportion such as miles and hours, leaving us with the desired units of meters and seconds. Then calculate m/s by multiplying 45 by 1000 meters and then dividing that value by 3600 seconds.
The resulting answer is 45mph = 12.5 m/s
Using this set up we can cross out the units that are on opposite sides of the proportion such as miles and hours, leaving us with the desired units of meters and seconds. Then calculate m/s by multiplying 45 by 1000 meters and then dividing that value by 3600 seconds.
The resulting answer is 45mph = 12.5 m/s