Question and answer
y(y + 4) - y = 6 is a quadratic equation. TrueFalse
y(y + 4) - y = 6 is a quadratic equation. This is TRUE.
Question
Asked 2/25/2014 9:30:52 AM
Updated 2/26/2014 8:58:53 PM
1 Answer/Comment
Get an answer
New answers
Rating
3
y(y + 4) - y = 6 is a quadratic equation.
This is TRUE.


Added 2/26/2014 8:58:53 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [6/28/2014 10:18:23 AM]
Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
Find the line of symmetry for the parabola whose equation is y = 2x 2 - 4x + 1.
Weegy: x=y+5/2 User: What is the vertex of the parabola whose equation is y = (x + 1)2 + 3? Weegy: Hint: Use ^ to indicate exponents in the future if you do not know how to write the exponents. Example: y = x^2 + 4x - 6 You have to complete the [ square to convert it into vertex form. y = x? + 4x - 6 Group. [ y = (x? + 4x) - 6 Factor y = (x? + 4x) - 6 Add placeholders. y = (x? + 4x + ___) - 6 - 1(___) Notice that the second blank is multiplied by -1 to account for what you had to add to complete the square. Take the coefficient of the x term: 4 Divide it by 2: 4 / 2 = 2 Square it: (2)? = 4 Add 4 to both blanks. y = (x? + 4x + 4) - 6 - 1(4) x? + 4x + 4 is the expanded form of a perfect square binomial. Remember that (a + b)? = a? + 2ab + b?. Apply this to what you have. y = (x? + 4x + 4) - 6 - 1(4) y = (x + 2)? - 6 - 1(4) Simplify the rest. y = (x + 2)? - 6 - 4 y = (x + 2)? - 10 Remember that the vertex form is: y = a(x - h)? + k CHECK: y = (x + 2)? - 10 y = [(x)? + 2(x)(2) + (2)?] - 10 y = (x? + 4x + 4) - 10 y = (x?) + 1(4x) + 1(4) - 10 y = x? + 4x + 4 - 10 y = x? + 4x - 6 TRUE ANSWER: y = (x + 2)? - 10 is the vertex form. Given: y = (x + 2)? - 10 Means: h = -2 Means: k = -10 Means: a = 1 ANSWER: The vertex is at (-2, -10). Since the equation is a function of x and a is positive, the parabola opens upwards. Parabolas that open upwards or downwards have an axis of symmetry that is the same as the h coordinate of the vertex. ANSWER: The axis of symmetry is at x = -2. Remember that y-intercepts have x = 0. Find the value of y when x = 0 by substitution x with 0 in the original equation. y = x? + 4x - 6 y = 0? + 4(0) - 6 y = 0 + 0 - 6 y = -6 ANSWER: The y-intercept is at (0, -6). ] (More)
Question
Expert Answered
Updated 3/12/2014 11:34:55 PM
2 Answers/Comments
The vertex of the parabola whose equation is y = (x + 1)^2 + 3 is (-1, 3)


Added 3/12/2014 11:33:06 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [7/8/2014 9:19:58 AM]
The line of symmetry for the parabola whose equation is y = 2x ^2 - 4x + 1 is x = 1.
Added 3/12/2014 11:34:55 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [7/8/2014 9:20:10 AM]
27,948,081
questions answered
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
Popular Conversations
The need for blank. Complicate information sharing among emergency ...
Weegy: The need for Advanced Equipment can complicate information sharing among emergency personnel. User: The MAC ...
12/9/2018 1:44:55 PM| 3 Answers
for a sound with low pitch what else is always low
Weegy: Pitch. ... Low-pitched sounds come from things that vibrate more slowly. Humans can hear sounds of different ...
12/12/2018 10:22:00 AM| 2 Answers
S
L
P
C
Points 605 [Total 1649] Ratings 2 Comments 585 Invitations 0 Offline
S
R
L
R
P
R
P
R
R
R
R
P
R
P
Points 485 [Total 2494] Ratings 4 Comments 445 Invitations 0 Offline
S
L
Points 405 [Total 551] Ratings 3 Comments 375 Invitations 0 Offline
S
Points 33 [Total 33] Ratings 1 Comments 23 Invitations 0 Offline
S
Points 20 [Total 20] Ratings 2 Comments 0 Invitations 0 Offline
S
L
R
P
Points 18 [Total 1381] Ratings 0 Comments 18 Invitations 0 Offline
S
Points 12 [Total 12] Ratings 0 Comments 2 Invitations 1 Offline
S
Points 11 [Total 11] Ratings 1 Comments 1 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 0 Comments 0 Invitations 1 Offline
S
Points 10 [Total 10] Ratings 0 Comments 0 Invitations 1 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.