Chapter7: Systems Of Equations And Inequalities
Section7.2: Systems Of Linear Equations: Three Variables
Problem 60SE: In a bag, a child has 325 coins worth $19.50. There were three types of coins: pennies, nickels, and...
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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.
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While walking in the country, you count 42 heads and 122 feet in a field of pigs and ducks. How many of each animal are there?
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