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A piecewise function is a function built from pieces of different functions over different intervals. For example, we can make a piecewise function f (x) where f (x) = -9 when -9 < x ≤ -5, f (x) = 6 when -5 < …

Learn to determine if the relationship described in a word problem is a function.

If we had a situation where if we input x into a box, it could be multiple possible y's, then this is not a function. So let's think about this table right over here.

Think of linear as just a line. A linear function is one that, when graphed, forms a line. Linear functions are in the form: f(x) = ax + b, where a and b are constants.

So whenever you're asked whether something is a function of something else, you're really just saying, look, for any input x, does it map to exactly one y? So if we say y is a function of x, in order for this to …

Given the graph of a discrete function, Sal shows how to evaluate the function for a few different values.

Learn about Laplace transform, a mathematical technique for solving differential equations, with engaging lessons and practice problems on Khan Academy.

Mar 15, 2021 · What do Khan Academy’s interactive math worksheets look like? Here’s an example: What are teachers saying about Khan Academy’s interactive math worksheets? “My students love …

Math> 8th grade math> Linear equations and functions> Graphing proportional relationships