Write the standard form of the quadratic function whose graph is a parabola with the given vertex and that passes through the gi
ven point. (Let x be the independent variable and y be the dependent variable.)
Vertex: (−3, 4); point: (0, 13)
2 answers:
Answer:
The formula for this quadratic function is x*2 +6x+13
Step-by-step explanation:
If we have the vertex and one point of a parabola it is possible to find the quadratic function by the use of this
y= a (x-h)*2 + K
Quadratic function looks like this
y= ax*2 + bx + c
So let's find the a
y= a (x-h)*2 + K where
y is 13, x is 0, h is -3 and K is 4
13= a (0-(-3))*2 +4
13=9a +4
9=9a
9/9=a
1=a
The quadratic function will be
y= 1(x+3)*2 + 4
Let's get the classic form
(x+3)*2 = (x+3)(x+3)
(x*2+3x+3x+9)
x*2 +6x+13
f(0) = 13
Answer:
y = x^2 + 6x + 13.
Step-by-step explanation:
The general vertex form is
y = = a(x - b)^2 + c where a is a constant and (b, c) is the vertex.
So as the vertex is (-3, 4) we have:
y = a(x - -3)^2 + 4
y = a(x + 3)^2 + 4
Now we find the value of a by substituting the point (0, 13)
13 = a (0 + 3)^2 + 4
13 = 9a + 4
9a = 13-4 = 9
a = 1.
So our equation is y = (x + 3)^2 + 4
Converting to Standard Form:
y = x^2 + 6x + 9 + 4
y = x^2 + 6x + 13.
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The answer is B
Explanation: when there is Two parentheses you multiply