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
Mashcka [7]
3 years ago
14

The point (4,-2) is the vertex of the graph of a quadratic function. The points (8,6) and (2,0) also fall on the graph of the fu

nction.
Part A:Complete the graph of this quadratic function by first finding two additional points on the graph.

Part B:What is the y-intercept of the graph?

Part C:What are the x-intercept?

Part D:Find the interval on which the rate of change is always positive.

Part E:What is the sign of the leading coefficient for this quadratic function? How do you know?
Mathematics
1 answer:
Elina [12.6K]3 years ago
4 0

Answer:

Step-by-step explanation:

y = ax² + bx + c

~~~~~~~

(4, - 2), (8, 6), (2, 0)

a(4²) + b(4) + c = - 2

a(8²) + b(8) + c = 6

a(2²) + b(2) + c = 0

16a + 4b + c = - 2 .............. <em>(1)</em>

64a + 8b + c = 6 ............... <em>(2)</em>

4a + 2b + c = 0 ................. <em>(3)</em>

a = 0.5 ; b = - 4 ; c = 6

<em>y = 0.5x² - 4x + 6</em>

Part A: (0, 6), (6, 0)

Part B: (0,6)

Part C: (6, 0)

Part D: [ 4, ∞ )

You might be interested in
PLEASE HELP ME FIND X please I really need help
Liono4ka [1.6K]

Answer:

is this a multiple-choice type thing or type-in? If multiple-choice, what answers are given?

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A plumbing company charges an initial fee of $50, plus an additional $26 per hour of service. A second company charges an initia
torisob [31]
The answer is C. You pay $128 in the third hour for both. Hope this helped
3 0
2 years ago
I need help with 6-9 it’s algebra :)
Fiesta28 [93]
6
Answer: The worm slithers 48 inches in an hour. The snail slithers 52 inches in an hour.
If we start by making both the races into equations we get 5w+4s=448 inch and 2w+3s=252 inch. If we then add both the equations together we get 7w+7s=700 inch. Then we divide it all to get 1w+1s=100 inch. Then we can subtract the second race from the first to get 3w+1s=196 inch. We now know that 2w=96 inch, and can therefor divide whit 2 to find out w=48. We can then figure out how fast the snail is moving by multiplying 48 whit w and dividing the answer by s.

7
A 3 scoops $1.28 2 scoops $.87 1.28-.87= 41 .87-.41-.41= 06. A cone costs $.06 and one scoop ice cream costs $.41
B. .06+.41•4=$1.70

8
A. Delivery is $20. One cord is $120.
B. 1 1/2 cord costs $200. ($180 for the cords and $20 for the delivery)

9
Can’t see full question.
5 0
3 years ago
Solve for x: 3(x - 2) = -9
Airida [17]

Answer:

X=-1

Step-by-step explanation:

3x-6=-9

3x=-9+6

3x=-3

x=-1

5 0
3 years ago
Factor the expression using the Greatest common factor 27k-6................ And 5x +60y
Alexandra [31]
27k -6 is equal to 3(9k - 2 ) 
and 5x +60 is equal to 5(x + 12) :)))
i hope this is helpful
have a nice day 
8 0
3 years ago
Other questions:
  • G(x)=15x-10 find the inverse and function
    12·1 answer
  • 15 is 25% of the what number?
    11·2 answers
  • 2x + 3 = 4x + 2<br><br> No solution, One solution, or Many solutions
    8·2 answers
  • For a circle of radius 3 feet, find the arc lengths subtended by a central angle of 57 degrees.
    10·2 answers
  • Find the quotient<br>- 72<br>-8​
    11·1 answer
  • Which expressions are equivalent to -3 -(7.5+4)
    6·1 answer
  • PLEASE HELP ASAP
    13·1 answer
  • Expand the following : 2( x-1)
    8·2 answers
  • If the height of a triangle is five inches less than the length of its base, and if the area of the triangle is 52 square inches
    13·1 answer
  • Area of a trapezium:1/2 3 (x+8)cm^{2] <br> what is the answer
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!