The general equation of a parabola is y = ax2 + bx + c.
The vertex of a parabola is (-b/2a, c - b2/4a). In our case the vertex is (2, -4). So we have,
-b/2a = 2, so that b = -4a, and
c - b2/4a = -4 (substitute -4a for b)
c - (-4a)2/4a = -4
c = 16a2/4a = -4 (simplify)
c - 4a = -4 (solve for c)
c = 4a - 4
By substituting -4a for b, and 4a - 4 for c, the equation becomes,
y = ax2 + bx + c
y = ax2 + (-4a)x + 4a - 4
Since it is given that when x = -3, y = -3, we substitute them into the new equation and solve it for a. So we have,
y = ax2 + (-4a)x + 4a - 4
-3 = a(-3)2 + (-4a)(-3) + 4a - 4
-3 = 9a + 12a + 4a - 4 (add 4 to both side, and add alike terms on the right-hand side)
1 = 25a (divide by 25 to both sides)
1/25 = a (this is the required answer)
If you want to find the equation of the parabola, just substitute 1/25 for a, such as:
y = ax2 + (-4a)x + 4a - 4
y = (1/25)x2 + [-4(1/25)]x + 4(1/25) - 4
y = (1/25)x2 -4/25x + 4/25 - 4
y = (1/25)x2 -4/25x + 96/25
The vertex of this parabola is at 5 5 When the x-value is 6 the y-value is -1. The coefficient of the squared expression in the parabola's equation is -6.
A parabola with vertex (h, k) has equation of the form: y = a(x - h)² + k → vertex (k, h) = (3, 5), and a point on it is (-1, 6) → 6 = a(-1 - 3)² + 5 → 6 = a(-4)² + 5 → 1 = 16a → a = 1/16 → The coefficient of the x² term is 1/16
The given equation is not that of a parabola since there are no powers of 2. Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc. And using ^ to indicate powers (eg x-squared = x^2).
7
It is x^2 - 5 which, if plotted on the x-y plane will be a parabola which is symmetric about the y axis and has its apex at (0, -5) .
The vertex of this parabola is at -3 -1 When the y-value is 0 the x-value is 4. The coefficient of the squared term in the parabolas equation is 7
The coefficient of the squared term in a parabola's equation, typically expressed in the standard form (y = ax^2 + bx + c), is represented by the value (a). This coefficient determines the direction and the width of the parabola: if (a > 0), the parabola opens upwards, and if (a < 0), it opens downwards. The larger the absolute value of (a), the narrower the parabola.
7
It is 1/16.
A coefficient is a number that accompanies a variable. For example, in the expression 2x + 4, the coefficient is 2.
To find the coefficient of the squared term in the parabola's equation, we can use the vertex form of a parabola, which is (y = a(x - h)^2 + k), where ((h, k)) is the vertex. Given the vertex at (3, 1), the equation starts as (y = a(x - 3)^2 + 1). Since the parabola passes through the point (4, 0), we can substitute these values into the equation: (0 = a(4 - 3)^2 + 1), resulting in (0 = a(1) + 1). Solving for (a), we find (a = -1). Thus, the coefficient of the squared term is (-1).
The vertex of this parabola is at -2 -3 When the y-value is -2 the x-value is -5. The coefficient of the squared term in the parabola's equation is -3.
The vertex of this parabola is at 5 5 When the x-value is 6 the y-value is -1. The coefficient of the squared expression in the parabola's equation is -6.
A parabola is a type of graph that is not linear, and mostly curved. A parabola has the "x squared" sign in it's equation. A parabola is not only curved, but all the symmetrical. The symmetrical point, the middle of the parabola is called the vertex. You can graph this graph with the vertex, x-intercepts and a y-intercept. A parabola that has a positive x squared would be a smile parabola, and the one with the negative x squared would be a frown parabola. Also, there are the parabolas that are not up or down, but sideways Those parabolas have x=y squared, instead of y = x squared.
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