Is #y = x# direct variation and if so what is the constant?

Related questions

• What is Direct Variation?
• What does direct variation look like on a graph?
• What are examples of direct variation?
• How do you determine if a function is a direct variation when given a table?
• How do you write direct variation equations?
• What is the constant of proportionality "k"?
• Why is #y=2x-1# not a direct variation?
• How do you graph the direct variation equation #y=-\frac{1}{6}x#?
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