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kenny6666 [7]
3 years ago
9

Identify the vertex of the parabola given by f(x) = (x + 2)^2 – 4

Mathematics
1 answer:
kicyunya [14]3 years ago
8 0

Answer:

The vertex is ( -2, -4)

Step-by-step explanation:

The vertex form is

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

where ( h,k) is the vertex

f(x) = (x + 2)^2 – 4

Rewriting

f(x) = (x -  -2)^2 – 4

The vertex is ( -2, -4)

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Write a formula for quadratic function if its graph has the vertex at point (0,6) and passes through the point (−1,−2).
d1i1m1o1n [39]

Answer:

y = - 8x² + 6

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (0, 6), thus

y = a(x - 0)² + 6, that is

y = ax² + 6

To find a substitute (- 1, - 2) into the equation

- 2 = a(- 1)² + 6, that is

- 2 = a + 6 ( subtract 6 from both sides )

- 8 = a

y = - 8x² + 6

4 0
3 years ago
What's 6 1/3 + 5 1/2 + 4 1/4=​
Art [367]

Answer:

16  1/12

Step-by-step explanation:

The LCD of 6 1/3 + 5 1/2 + 4 1/4 is 12; 12 is evenly divisible by 3, 2 and 4.

We can rewrite this expression as:

6 + 5 + 4 + 1/3 + 1/2 + 1/4, or

    15        +4/12 + 6/12 + 3/12, or

    15         + 13/12, or

     16  1/12

4 0
3 years ago
Class 1 and class 2 have a total of 630 house points. Class 1 have double the number of house points that class 2 have. How many
Wewaii [24]

Answer:

Class 2 has 210 house points.

Step-by-step explanation:

630/3 = 210

1 = 210 x 2 = 420

2 = 210

420 + 210 + 630

6 0
2 years ago
Read 2 more answers
I need help with this !!! I’ll give brainliest!!!! (_/~15~)2 !!!! Look at picture please!!
antoniya [11.8K]

Answer:

15

Step-by-step explanation:

a square root multiplied by itself equals the number inside the box, right?

(/~15~)2 = 15

3 0
3 years ago
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Someone plz help me
GenaCL600 [577]

Answer:

jayden is 11.

39 + 2 is 41

41 -30=11

hope this helps

Step-by-step explanation:

6 0
3 years ago
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