 # Question: What Happens When A Is Negative?

## What happens when the A value is negative?

In conclusion, as the magnitude of a increases, the graph of the parabola becomes narrower, and as the magnitude of a decreases, the graph of the parabola becomes wider.

If a is negative, the graph of the parabola opens down instead of up..

## What does a negative period mean?

The period of the graph is , as is the period of . The effect of the negative sign on the inside is to replace x-values by their opposites. This will flip the graph around the y-axis. However, because the graph of cosine is symmetric about the y-axis, this has no effect at all.

## How do you know when a parabola is up or down?

Let’s look at a few key points about these patterns:If the x is squared, the parabola is vertical (opens up or down). If the y is squared, it is horizontal (opens left or right).If a is positive, the parabola opens up or to the right. If it is negative, it opens down or to the left.The vertex is at (h, k).

## What does a negative cosine graph look like?

Hare – sign is in front of the cosine graph. If we draw the negative cosine it will produce the reflection about the x – axis. So the negative cosine graph will be opposite to the positive graph.

## What is the period of sin?

2πThe period of the sine curve is the length of one cycle of the curve. The natural period of the sine curve is 2π. So, a coefficient of b=1 is equivalent to a period of 2π. To get the period of the sine curve for any coefficient b, just divide 2π by the coefficient b to get the new period of the curve.

## Can you have a negative natural frequency?

All waveforms observed in nature are real valued functions of time. Each such waveform has a negative frequency component which is identical to its positive frequency, i.e. when the spectrum is plotted (or measured) as a function of frequency the negative spectrum is a mirror image of the positive spectrum.

## Is 0 a negative number?

Because zero is neither positive nor negative, the term nonnegative is sometimes used to refer to a number that is either positive or zero, while nonpositive is used to refer to a number that is either negative or zero. Zero is a neutral number.

## What happens if amplitude is negative?

The difference with a negative value of a however, is our sine curve now has a negative amplitude. In other words, our graphs are the same as when a was a positive value, but are now reflected across the x-axis. To see a direct comparison between positive and negative values of a, click here.

## How do you know if the amplitude is negative?

Amplitudes are always positive numbers (for example: 3.5, 1, 120) and are never negative (for example: -3.5, -1, -120). Amplitudes are positive because distance can only be greater than zero or equal to zero; negative distance does not exist.

## What is the lowest negative number?

The greatest negative integer is -1. From there the numbers progress towardnegative infinity. There are an infinite number of negative integers as they approach negative infinity. So there is no smallest negative integer.

## How do you know if a parabola is wide or narrow?

If a>0 in f(x)=ax2+bx+c, the parabola opens upward. In this case the vertex is the minimum, or lowest point, of the parabola. A large positive value of a makes a narrow parabola; a positive value of a which is close to 0 makes the parabola wide.

## Can I still be pregnant if the test is negative and no period?

Your hCG levels will increase over time if you are pregnant. A negative pregnancy test result means the test hasn’t detected hCG in your urine. If your period is very late, or you’ve skipped your period, and you get a negative result, you are unlikely to be pregnant.

## Can you be six weeks pregnant and have negative test?

If the test is still negative, you are probably not pregnant. There may be another reason you are missing your periods. If you keep having negative pregnancy tests and your period is 6 to 8 weeks late, tell your healthcare provider. Home tests are not 100% accurate.

## What happens to the parabola when a or a 1?

When |a| > 1, the parabola appears thinner. When a is positive, the parabola opens upwards; when a is negative, the parabola opens downward. We can also see from the graphs that they all have a common point (0,3). Associating this with our equations, we notice that this correlates to our c = 3.

## What does B do in a parabola?

Changing the value of “b” will move the axis of symmetry of the parabola from side to side; increasing b will move the axis in the opposite direction. 3. Changing the value of “c” will move the vertex of the parabola up or down and “c” is always the value of the y-intercept.