Lab 31. |2x 5 12x + 5 32. 13x 5 |3x + 5 33. x 3 |5 x 34. x - 3 16 x| 35. |2y 6 10 2yl 36. 4y + 3 |4y + 5 2x X +3 3 - 2 37. 3 1 X 2 X - 2 38. In Exercises 39-74, solve and graph the sc number line. 40. x 42. x 39. x3 Ir-21 XK A4

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.