Graph Parabolas with Vertices Not at the Origin
Find the Vertex

question 28

Multiple Choice

Graph Parabolas with Vertices Not at the Origin
Find the vertex, focus, and directrix of the parabola with the given equation.
- $( y - 4 ) ^ { 2 } = - 16 ( x - 2 )$

• A) vertex: \(( 2,4 )\)
• focus: \(( - 2,4 )\)
• directrix: \(x = 6\)
• B) vertex: \(( - 2 , - 4 )\)
• focus: \(( - 6 , - 4 )\)
• directrix: \(x = 2\)
• C) vertex: \(( 4,2 )\)
• focus: \(( 0,2 )\)
• directrix: \(x = 8\)
• D) vertex: \(( 2,4 )\)
• focus: \(( 6,4 )\)
• directrix: \(x = - 2\)

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Definitions:

Neuropeptide

A type of molecule used by neurons to communicate with each other, involving in various brain functions such as analgesia, reward, food intake, metabolism, reproduction, social behaviors, learning, and memory.

Neurons

Nerve cells that transmit electrical signals throughout the body, integral to the functioning of the nervous system.

Presynaptic Terminal

Enlarged axon terminal or terminal bouton.

Neurotransmitter

Chemical substances released by neurons to transmit signals across a synapse to another cell, either exciting or inhibiting their functions.