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
Zigmanuir [339]
2 years ago
6

13. Find the vertex of f(x)=x2 -6x +8 .

Mathematics
1 answer:
Mekhanik [1.2K]2 years ago
6 0

9514 1404 393

Answer:

  a  (3,-1)

Step-by-step explanation:

The number that "completes the square" is the square of half the x-coefficient, (-6/2)^2 = 9. Rearranging the given function to include the square trinomial, we have ...

  f(x) = x^2 -6x +9 -1 . . . . . . . here, we have 8 = 9 - 1

  f(x) = (x -3)^2 -1 . . . . . . . . . . vertex form

Comparing this to the generic vertex form ...

  f(x) = (x -h)^2 +k . . . . . . . vertex at (h, k)

we see that h=3 and k=-1.

The vertex is (h, k) = (3, -1).

You might be interested in
Why is (0,1) y-intercept of the form below?
morpeh [17]
It isn’t because when there is no addition in the equation the y intercept is 0
4 0
3 years ago
If the same BLANK number is multiplied to each side of a true inequality, the inequality sign is reversed to make the resulting
Maurinko [17]
Answer: Negative
If the same negative number is multiplied to each side of a true inequality, then the inequality sign flips to make the new inequality true as well

Example:
Take 1 < 5 and multiply both sides by -2 and we get -2 > -10. The "less than" sign flips to "greater than" since -2 < -10 is false. The value of -10 is further to the left of -2 so -10 is smaller in value. The negative basically takes the complete opposite which is why the flip must happen.

This sign flip rule does not happen if you multiply both sides by a positive number.
5 0
3 years ago
Walmart is selling 5 notebooks for $4.00. How much is it to buy 12 notebooks?
Anon25 [30]

Answer:

$9.60

Explanation:

4 divided by 5= 0.8

0.8 times 12= 9.6

7 0
3 years ago
suppose y varies directly with x, an dy = 10 when x =3. what direct variation equations relates x and y?
Ratling [72]

The direct variation equation relates x and y is y = \frac{10}{3} x

Step-by-step explanation:

Direct variation is when one variable is equal to a constant times another variable

If y varies directly with x, then

  • y ∝ x
  • y = k x is the equation of variation
  • k is the constant of variation

∵ y varies directly with x

∵ y ∝ x

∴ y = k x

∵ y = 10 when x = 3

- Substitute these values in the equation above to find k

∴ 10 = k(3)

∴ 10 = 3 k

- Divide both sides by 3

∴ k = \frac{10}{3}

∴ The equation of variation is y = \frac{10}{3} x

The direct variation equation relates x and y is y = \frac{10}{3} x

Learn more:

You can learn more about variation in brainly.com/question/10708697

#LearnwithBrainly

8 0
3 years ago
Help! giving 13 points!
Shtirlitz [24]
To determine the perimeter of the triangle given the vertices, calculate the distances between pair of points. For the first pair (-5,1) and (1,1), the distance is 6. For the next pair, (1,1) and (1, -7), the distance is 8. Lastly, for the pair of points (-5,1) and (1, -7), the distance is 10. Adding all the distance will give the perimeter of the triangle. Thus, the perimeter is 24. 
6 0
3 years ago
Other questions:
  • Do #4. Find the range. Please explain how you know the answer
    7·1 answer
  • Could someone help me with this question
    8·2 answers
  • Lupus is a medical phenomenon where antibodies that are supposed to attack foreign cells to prevent infections instead see plasm
    14·1 answer
  • What is the value of x in the equation 2(x+3)=4(x-1)
    5·1 answer
  • Simplify (2^3)^-2<br> -1/64<br> 1/64<br> 2<br> 64
    14·1 answer
  • Work out the lengths of sides a and b.<br> Give your answers to 1 decimal place.
    8·1 answer
  • Can someone helpppp please I’m struggling!!
    12·1 answer
  • Katlyn sent 34,008 text messages last
    6·2 answers
  • 23 students want pancakes and 25 students wants waffles .what is the ratio of the number of students who want pancakes to the nu
    11·1 answer
  • Y=-2/3 3 what is the slope of the equation entered as a fraction
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!