Explain the relationship between the “c” value of a quadratic equation and the “b” value of a linear equation. support your explanation with examples.

Both represent where the graphs cross the y-axis. This value is called the y-intercept.

The quadratic equation  is used to represent a quadratic relationship, and if you replace x with 0 which is how you find the y-intercept, the result is y = c.
Example: 
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The linear equation  is used to represent a linear relationship, and if you replace x with 0 which is how you find the y-intercept, the result is y = b.
Example:
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The answer is 225 miles per 4.5 hours. hope this ; )