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3 years ago

Is (4,3) a solution to 2x-y <4?

2 answers:

3 0

Sub the point into the inequality
2(4)-3<4
8-3<4
5<4
Therefore, no, it is not a solution because 5 is not less than 4
Hope this helps!

Alika [10]3 years ago

3 0

Well to know, just plug in the numbers!
(2) (4) - 3 < 4
8 - 3 < 4
5 < 4
4 is not greater than 5 so (4,3) can NOT be your solution

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About the easiest way to do this for small values of n is to compute each of the terms using the given recurrence relation.

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<em>Alternate solution</em>

You recognize that the recurrence relation describes a geometric sequence with a first term of 4 and a common ratio of -3. The n-th term of a geometric sequence is ...

$a_n=a_1\cdot r^{n-1} \qquad\text{for first term $a_1$ and common ratio $r$}$

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4 years ago

Read 2 more answers