22. Ten students in a jazz history class were given a pre-test and a post-test to see how much they learned in the class. Pre-test 8 13 22 25 29 31 35 38 42 52 Post-test 31 37 45 28 50 37 49 25 36 69 Can we say that the post-test scores are significantly higher than the pre-test scores?

Equations and inequalities describe the relationship between two mathematical expressions.

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.