Practice Parameter in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

A parameter is a quantity in a mathematical expression that remains constant for a particular case but can change between cases. For example, in y = mx + b, the slope m and intercept b are parameters — each choice of m and b gives a different line.

In y = mx + b, m and b are parameters — different values give different lines.

Example 1

medium
In the family of lines y = mx + 3, what role does m play?

Example 2

hard
For what value of the parameter k does kx + 2 = 6 have the solution x = 2?

Example 3

medium
In the family of lines y = mx + 3, find the slope when the line passes through (2, 7).

Example 4

easy
In y = 2x + b, is b a variable or a parameter?

Example 5

medium
The quadratic f(x) = x^2 - px + 4 has a zero at x = 1. Find p.
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