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MakcuM [25]
3 years ago
11

Find the x-intercepts of the parabola with vertex (1,-17) and y-intercept (0,-16)...

Mathematics
1 answer:
IrinaK [193]3 years ago
8 0

To solve this problem you must apply the proccedure shown below:

1. You have that the standard form of the equation for a parabola is:

y=a(x-h)^{2}+k

Where (h,k) is the vertex

2. Substitute the values shown into the equation:

y=a(x-1)^{2} -17

3. Now, substitute y=-16 and x=0 to calculate a:

-16=a(0-1)^{2} -17\\ a=1

4. Then, the equation of the parabola is:

y=(x-1)^{2} -17

5. To calculate the x-intecept y must be y=0. Substitute it into the equation and solve for x:

0=(x-1)^{2} -17\\ x^{2} -x-16=0\\ x=4.53; x=-3.53

The answer is: (4.53,0),(-3.53,0)

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