Porisma

A hint to get started

Read a parabola’s vertex and choose an equation

Write down one possible equation of the parabola shown in the diagram.

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A parabola opens left, with vertex labelled (5,−3). Its width is illustrative; determine one possible equation from the vertex and direction.
A parabola opens left, with vertex labelled (5,−3). Its width is illustrative; determine one possible equation from the vertex and direction.
A parabola opens left, with vertex labelled (5,−3). Its width is illustrative; determine one possible equation from the vertex and direction.

CJC · Lecture · Example 2

Identify which coordinate is squared before choosing a standard form. Read the vertex from the translated factors.

Read the worked solution