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jasmine3051
12.10.2019 •
Mathematics
What is the vertex and the equation of the axis of symmetry of the graph of y=x^2-6x-7
a. vertex: (–16, 3)
a.o.s: x = –16
b. vertex: (–3, 20)
a.o.s: x = –3
c. vertex: (3,–16)
a.o.s: x = 3
d. vertex: (20, –3)
a.o.s: x = 20
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Ответ:
Ответ:
Option C is correct
Vertex: (3, -16) and axis of symmetry is x = 3
Step-by-step explanation:
The axis of symmetry for a parabolic general equation
is given by:
Vertex of the equation is:![(-\frac{b}{2a}, f(-\frac{b}{2a})](/tpl/images/0312/0499/36efa.png)
As per the statement:
The graph of the equation is:
On comparing with general parabolic equation i.e
we have;
a = 1, b = -6 and c = -7
By [1] we have;
Substitute the given values we have;
Simplify:
x = 3
Substitute the value of x= 3 in [2] we have;
Therefore, the vertex of the given equation is: (3, -16) and axis of symmetry is x = 3
Ответ:
-2x + 2
Step-by-step explanation: