3 years ago

How do you find the y-intercept in a quadratic equation

1 answer:

4 0

Find the x-intercept(s). To find the x-intercept let y = 0 and solve for x. You can solve for x by using the square root principle or the quadratic formula (if you simplify the problem into the correct form).

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CAN SOMEONE PLEASE CHECK OVER THIS ??

uysha [10]

Honestly I think you are correct, not trying to take your point. :)

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4 years ago

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determine the equation of the parabola (simplified) with roots -3+sqrt6 and -3-sqrt6, and passing through the point (-1,4)

klio [65]

Given:

Roots:

$\begin{gathered} -3+\sqrt[]{6} \\ -3-\sqrt[]{6} \end{gathered}$

Point: (-1,4)

To determine the equation of the parabola with the given roots and point, we find the missing values first.

Since the roots are given, we can say that the equation is:

$y=a(x+3-\sqrt[]{6})(x+3+\sqrt[]{6})$

Next, we expand the terms.

$y=a(x^2+6x+3)$

Then, we plug in x= -1, and y=4 into the equation to get the value of a.

$\begin{gathered} y=a(x^2+6x+3) \\ 4=a((-1)^2+6(-1)+3) \\ \text{Simplify and rearrange} \\ 4=a(-2) \\ a=\frac{4}{-2} \\ a=-2 \end{gathered}$

So,

$undefined$

6 0

2 years ago

I need a little help with this question. Thanks in advance!

Marianna [84]

the answer would be B.

5 0

3 years ago

Pre Calculus

attashe74 [19]

x² + 2x + 2

Step-by-step explanation:

(F + G)(x)

= F(x) + G(x)

= 2x + x² + 2

= x² + 2x + 2

7 0

3 years ago

Find the mean median and mode and range of the data set- 22, 45, 30, 18, 22

serious [3.7K]

Mean is 27.4
Median is 22
Range is 27

Just use the mathematical definition of each word

7 0

4 years ago

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