# 6×+4=13 it is a quadratic or not quadratic, justify it?

2
by annie18

## Answers

2015-05-25T19:44:55+08:00

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This is not a quadratic but a linear equation since a quadratic equation has the form:
where a is never equal to 0.

While a linear equation has the form:

This is simply the form when a is 0.

In the given equation we only have x and not x^2 so it is not quadratic.
2015-05-26T10:39:36+08:00

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6x+4=13

Just by observing it, it is not quadratic because the variable x should have a power of 2 instead of the power of 1. Second, if you try to solve it, it has only one root, but in quadratic it says it must have 2 roots.

Hope this helps =)