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3 cards from this section. Quick, good the night before a test.
Define a linear equation.
Think about what makes a linear equation different from other types.
What is the general form of a linear equation in two variables?
Remember the variables and coefficients involved.
A linear equation can have how many solutions?
Think about the different cases for linear systems.
True or False: The slope of a line represents the steepness and direction.
Recall the meaning of slope in graphs.
A store sells notebooks at $3 each and pens at $1 each. If you buy a total of 15 items for $36, write a system of equations to represent this situation, and solve it.
Think about how to break down the total items and costs into equations.
A student scored 60% on a math exam and needed to achieve an overall average of 70% across two tests. If the second test is worth twice as much as the first, what score is required on the second test?
Remember to consider the weighting of each test in your equation.
4 more questions in this section. Enroll free to practise them all.
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