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.
A passenger train leaves a railway station at 12:00 pm and travels 3 hours on the Northbound tracks. A second passenger train leaves the same railway station at 12:45 pm and travels 2 hours and 15 minutes onthe Southbound tracks at a speed of 20 kilometers per hour faster than the first train. At 3:00 pm the two trains were 360 kilometers apart. How fast was each train traveling?
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