kristineford198
24.03.2020 •
Mathematics
Identify the vertex and axis of symmetry of 8x
Solved
Show answers
More tips
- H Health and Medicine What You Need to Know About Nasal Congestion in Infants: Causes, Symptoms, and Treatment...
- A Auto and Moto Mastering One-Movement Parking: All You Need to Know...
- P Photography and Videography Understanding HDR: How It Works and Why You Need It...
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
- C Computers and Internet How to Choose an Uninterruptible Power Supply (UPS) for Your Computer: Expert Tips...
- S Science and Technology How to choose a home theater system?...
- A Auto and Moto How to Choose a Car Wash? Tips and Recommendations...
- A Animals and plants How ants survive winter: exploring the secrets of their winter life...
- C Construction and repair How to Choose the Best Underfloor Heating?...
- S Sport When is the Champions League final?...
Answers on questions: Mathematics
- M Mathematics Maria are 8 ani. tatal ei are cu 46 de ori mai mulți ani. cati ani au împreuna...
- M Mathematics Pleaseee help will give BRAINLIEST...
- M Mathematics The perimeter of a yard is 25 yards. if the length of the yard is 5, what is the width of the yard?...
- M Mathematics A spherical balloon has a -in. diameter when it is fully inflated. Half of the air is let out of the balloon. Assume that the balloon remains a sphere. a. Find the volume...
- M Mathematics The triangles formed by the diagonals of a square are equilateral. always sometimes never...
- M Mathematics For a trail mix recipe, Jennifer uses 3.9 ounces of granola. She also uses 0.1 ounces of raisins and 5 ounces of chocolate chips. She will put 2.5 ounces into each bag...
- M Mathematics Please answer number 5 for brainliest:)...
- M Mathematics The college bookstore tells prospective students that the average cost of its textbooks is $92 per book, with a standard deviation of $15. The engineering students think...
- M Mathematics Maria has a portfolio consisting of 7 shares of stock A (purchased for $70 per share) and 4 shares of stock B (purchased for $100 per share). She assumes the expected...
- M Mathematics The height of a tree increases at the rate of 2 cm per month. Remy begins measuring the tree at 10 cm. Identify a linear equation that describes the change in height over...
Ответ:
Factor the minus or negative off the -x²+8x and don't do anything with -12
Find the number that can complete the square, for x²-8x, it'd be +16.
Just think of debt, you borrow, you have to give back. You borrow +16 then you have to give 16 out so you write -16 out of x²-8x+16 but still inside the bracket.
Distribute the minus/negative inside the bracket as you get -(x-4)²+16-12 because negative multiply negative and you get positive
Then you get y=-(x-4)^2+4
Because a<0, it's inverted parabola as shown below.
therefore, the vertex is at (4,4) or (-(-4), 4) because the vertex is at (-h,k) and h is -4 that means -h = 4
axis of symmetry is -b/2a, our b is 8, -b = -8 and 2a = 2(-1) so -8/-2 = 4 (From the standard form)
therefore, axis of symmetry is 4
Ответ: