Solve: 14 = k(0.4) k = _____
2 answers:
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Since the graph is a linear function, we're going to use the slope formula solve this:
Note I am replacing m with k
Inserting 2 points from the graph, let's use (1,8) and (2,16).
k=8
Note I am replacing m with k
Inserting 2 points from the graph, let's use (1,8) and (2,16).
k=8
If n is rational, it means that
Therefore when we do n² we can write it as
Remember that the product of two integer numbers is also an integer, therefore we can guarantee that
Then we can confirm that n² is the quotient of two integers and the denominator is not zero, therefore, n² is always rational, it cannot be an irrational number