Textbook Problem If a ball is thrown into the air with a velocity of 40 ft/s, its height in feet tseconds later is given by y= 40t - 162 (a) Find the average velocity for the time period beginning when t 2 and lasting (i) 0.5 seconds (ii) 0.1 seconds (iii) 0.05 seconds (iv) 0.0 I seconds (b) Estimate the instantaneous velocity when t= 2

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

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.