Weegy: 2(x - 4) = 6(x + 2) 2x - 8 = 6x + 12; 2x - 6x = 12 + 8; -4x = 20; x = -20/4; x = -5
User: Which of the following equations is of a parabola with a vertex at (1, 2)?
y = (x - 1)^2 - 2
y = (x - 1)^2 + 2
y = (x + 1)^2 - 2
y = (x + 1)^2 + 2
User: What is the solution set of 6x^2 - 24 = 0?
{-2, 2}
{-2}
{2}
User: A circle has a diameter with endpoints of (-2, 8) and (6, 4). What is the center of the circle?
(8, 12)
(4, 12)
(2, 6)
User: Graph y > (x + 2)2
User: Write the quadratic equation in general form. What is the value of b^2 - 4ac?
1 = 2x^2 + 7x
40
41
57
User: Find the midpoint of the line segment whose endpoints are (-2, 5) and (4, -9).
(2, -7)
(1, -4)
(1, -2)
Weegy: (1, -2) is the midpoint of the line segment whose endpoints are (-2, 5) and (4, -9).
User: y(y + 4) - y = 6 is a quadratic equation.
True
False
User: If (x + 1)(x - 3) = 5, then which of the following statements is true?
x + 1 = 0 or x - 3 = 0
x + 1 = 5 or x - 3 = 5
x - 4 = 0 or x + 2 = 0
Weegy: x^2 - x - 12 = 0; (x - 4) (x + 3) = 0; x - 4 = 0; x = 4; x + 3 = 0; x - 3; x = {4, -3}
User: Which of the following statements follows from (x - 3)2 = 5?
x2 + 9 = 5
x - 3 = ± square root of 5
x - 3 = ±25
User: Which of the following describes the translation of the graph of y = x^2 to obtain the graph of y = -x^2 - 3?
reflect over the x-axis and shift left 3
reflect over the x-axis and shift down 3
reflect over the y-axis and shift down 3
(More) 8
(-2, -1) is in the solution set of y < x^2 - x - 6.
when x = -2,
(-2)^2 - (-2) - 6 = 4 + 2 - 6 = 0 > -1
Added 4/26/2015 1:16:00 AM
This answer has been confirmed as correct and helpful.
Confirmed by
Andrew. [4/26/2015 2:31:28 AM]
8
y(y + 4) - y = 6 is a quadratic equation. True.
y(y + 4) - y = 6
y^2 + 4y - y = 6
y^2 + 3y - 6 = 0
It is a quadratic equation.
Added 4/26/2015 1:17:39 AM
This answer has been confirmed as correct and helpful.
Confirmed by
Andrew. [4/26/2015 2:32:08 AM]
8
(x + 1)(x - 3) = 5
x^2 - 2x - 3 = 5
x^2 - 2x - 8 = 0
(x - 4)(x + 2) = 0
x - 4 = 0 or x + 2 = 0
if (x + 1)(x - 3) = 5 the true statement is x - 4 = 0 or x + 2 = 0
Added 4/26/2015 1:19:15 AM
This answer has been confirmed as correct and helpful.
Confirmed by
Andrew. [4/26/2015 2:32:27 AM]
8
x - 3 = ± square root of 5 follows from (x - 3)^2 = 5.
Added 4/26/2015 1:19:54 AM
This answer has been confirmed as correct and helpful.
Confirmed by
Andrew. [4/26/2015 2:32:56 AM]
