April wants to use her graphing calculator to check her sketch of y = 
x but her calculator does not make 
calculations.Find two equations she could use.
Definitions:
NHS
The National Health Service (NHS) is the publicly funded healthcare system of the United Kingdom, providing a comprehensive range of medical services.
Polarity
A property of molecules having a distribution of charge leading to molecules having distinct positive and negative ends.
Carbon Monoxide
A colorless, odorless, and toxic gas consisting of one carbon atom and one oxygen atom, chemically represented as CO.
Polarity
A property of molecules having distinct ends with opposite charges, leading to unequal sharing of electrons.
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