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Simplify all rational expressions to lowest terms.
In 2 and 3, solve for x and check.
4. Graph y = 2x - 3
5. Find the equation of the line that goes through (1, 4) and (3, 5).
6. Suppose that you have $500 in the bank after 4 months and $700 in the bank after 6 months. Let x denote the number of months and let y be the amount of money in the bank. Write a linear equation that predicts the amount of money in the bank as a function of the number of months. Use this equation to predict how much money you would have after 12 months.
7. Solve the following system of simultaneous linear equations by
8. Judy has 15 coins, all nickels or dimes. If the coins are worth $1.05, how many of each type of coin does she have?