2.
1 answer:
Answer:
The answer is A. f(x) ≥ 2x2 + 4x or C. f(x) ≤ 2x2 + 4x
Step-by-step explanation:
Vertex:
( − 1 , − 2 )
Focus:
( − 1 , − 15 /8 )
Axis of Symmetry:
x
=
−
1
Directrix:
y
=
−
17
8
x
y
−
3
6
−
2
0
−
1
−
2
0
0
1
6
Vertex:
( − 1 , − 2 )
Focus:
( − 1 , − 15 /8 )
Axis of Symmetry:
x
=
−
1
Directrix:
y
=
−
17
8
x
y
−
3
6
−
2
0
−
1
−
2
0
0
1
6
Vertex:
( 1 , 2 )
Focus:
( 1 , 15 /8 )
Axis of Symmetry:
x
=
1
Directrix:
y
=
17
8
x
y
−
1
−
6
0
0
1
2
2
0
3
−
6
Vertex:
( − 1 , − 2 )
Focus:
( − 1 , − 15 /8 )
Axis of Symmetry:
x
=
−
1
Directrix:
y
=
−
17
8
x
y
−
3
6
−
2
0
−
1
−
2
0
0
1
6
Vertex:
( 1 , 2 )
Focus:
( 1 , 15 /8 )
Axis of Symmetry:
x
=
1
Directrix:
y
=
17
8
x
y
−
1
−
6
0
0
1
2
2
0
3
−
6
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Check out the diagram below. We have segment BC equal to 120 meters long. Points B, C, D and E are all on the edge of the same circle. According to the inscribed angle theorem, angles BDC and BEC are congruent. This shows that the surveyor could be at points D or E, or the surveyor could be anywhere on the circle. There are infinitely many locations for the surveyor to be at, which leads to infinitely many possible widths of this canal.
