1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Svet_ta [14]
2 years ago
13

30 POINTS PLEASE HELP!!! 4. The following equations represent the same quadratic function written in standard, vertex, and inter

cept form, respectively. f (x)=0.5x^2 +x-1.5, f (x)=0.5 (x+1)^2 -2, f (x) =(0.5x+1.5) (x-1) Based on these equations, which ofthe following is a trait of the graph of f (x) ? A: the range is y>= -2 B: the line of symmetry is x=0.5 C: the graph falls toward negative infinity to both the left and right D: the y-intercept is (0, -2) Answer correctly and I'll mark Brainliest! Thank you in advance, i was caught on this practice problem
Mathematics
2 answers:
sergij07 [2.7K]2 years ago
3 0

Answer:

A

Step-by-step explanation:

So we have the quadratic equation and it's written in three equivalent forms:

f(x)=0.5x^2+x-1.5\\f(x)=0.5(x+1)^2-2\\f(x)=(0.5x+1.5)(x-1)

Let's determine the characteristics of the quadratic equation with the given equations.

From the first equation, since the leading coefficient (0.5) is positive, we can be certain that the graph opens upwards.

Also, the constant term is -1.5, so the y-intercept is (0,-1.5).

The second equation is the vertex form. Vertex form has the format:

f(x)=a(x-h)^2-k

Where (h,k) is the vertex. From the second equation we know that h is -1 (because (x+1) is the same as (x-(-1))) and k is -2. Therefore, the vertex is (-1,-2).

And since the graph points upwards, this means that (-1,-2) is the minimum point of the function. In other words, the range of the function is greater than or equal to -2. In interval notation, this is:

[-2,\infty)

This also means that the end behavior of the graph as a x approaches negative and positive infinity is positive infinity because the graph will always go straight up.

Also, the third form is the factored form. With that, we can solve for the zeros of the quadratic. The zeros are:

0.5x+1.5=0\text{ and } x-1=0\\0.5x=-1.5 \text{ and }x=1\\x=-3\text{ and }x=1

Therefore, the graph crosses the x-axis at x=-3 and x=1.

So, from the three equations, we gathered the following information:

1) The graph curves upwards.

2) The roots of zeros of the function is (-3,0) and (1,0).

3) The y-intercept is (0,-1.5).

4) The vertex is (-1,-2). This is also the minimum point.

5) Therefore, the range of the graph is all values greater than or equal to -2.

6) The end behavior of the graph on both directions go towards positive infinity.

Therefore, our correct answer is A.

B is not correct because the line of symmetry (or the x-coordinate of the vertex) here is -1 and not 1/2.

C is not correct because the graph goes towards <em>positive </em>infinity since it shoots straight up.

And D is not correct because the y-intercept is (0,-1.5).

Pachacha [2.7K]2 years ago
3 0

Step-by-step explanation:

So we have the quadratic equation and it's written in three equivalent forms:

\begin{gathered}f(x)=0.5x^2+x-1.5\\f(x)=0.5(x+1)^2-2\\f(x)=(0.5x+1.5)(x-1)\end{gathered}

f(x)=0.5x

2

+x−1.5

f(x)=0.5(x+1)

2

−2

f(x)=(0.5x+1.5)(x−1)

Let's determine the characteristics of the quadratic equation with the given equations.

From the first equation, since the leading coefficient (0.5) is positive, we can be certain that the graph opens upwards.

Also, the constant term is -1.5, so the y-intercept is (0,-1.5).

The second equation is the vertex form. Vertex form has the format:

f(x)=a(x-h)^2-kf(x)=a(x−h)

2

−k

Where (h,k) is the vertex. From the second equation we know that h is -1 (because (x+1) is the same as (x-(-1))) and k is -2. Therefore, the vertex is (-1,-2).

And since the graph points upwards, this means that (-1,-2) is the minimum point of the function. In other words, the range of the function is greater than or equal to -2. In interval notation, this is:

You might be interested in
14. The least common multiple of 2, 5, 6, and 9 is
CaHeK987 [17]

Answer:

A

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Convert to standard form: y=1/3x + 3/4
ira [324]

Answer:

4x-12y=9

Step-by-step explanation:

y=1/3 x + 3/4

1/3 x-y=3/4

(x-3y)/3=3/4

4(x-3y)=3×3

4x-12y=9

6 0
2 years ago
How does -1.125 + 1.2 = 0.075 instead of 0.925?
kenny6666 [7]

Answer:

.0075 (hope this help; let me know if not)

Step-by-step explanation:

The operation is + and the signs of the numbers are opposite so we have to subtract. The bigger number has positive sign in front if so we do 1.2-1.125=1.200-1.125

I'm going to line up

1.200

-1.125

---------

If you have 200 and you take about 125... 75 should beleft

so

1.200

-1.125

---------

0.075

6 0
3 years ago
Which equation is equivalent to -2(2 − 2x) = 4 − 8(1 − x)
Kay [80]

Answer:

8 = 4x OR 0 = 4x

Step-by-step explanation:

I not %100 sure or it could be 0 = 4x

EITHERONE

6 0
3 years ago
Wiley wants to make as many snack
Ghella [55]

Answer:

Wiley can make 10 snack packs.

Step-by-step explanation:

Assuming that you can't put a fraction of one item in a snack pack and yoou must use all the items, Each pack must contain a integer number of items. The smallest possible way is for each snack pack to contain 3 slices of cheese and 4 crackers. This results in a total of 10 snack packs.

6 0
3 years ago
Other questions:
  • What is 433.38 in word form
    12·2 answers
  • Lenny is saving up to buy a car. The table below shows the linear relationship between how much Lenny has saved and the number o
    13·1 answer
  • What is Y equals negative 2X plus 6 in standard form
    10·1 answer
  • What is the constant of proportionality in the equation: y=5.1x
    14·2 answers
  • If there are 21 ladybugs how many bumblebees?​
    5·1 answer
  • Help ME plaese :D ::D TOOOOT TOOOT
    15·1 answer
  • Please help me !!!!!!
    11·1 answer
  • Defective components: A lot of 9 components contains 4 that are defective. Two components are drawn at random and tested. Let A
    12·1 answer
  • Brainnnnnnnnnnnnnnnnnnnnnnnnnnn
    5·1 answer
  • **DUE AT 2:15 P.M, NEED ANSWER NOW
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!