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2 cards from this section. Quick, good the night before a test.
Express the linear equation x + 3 = 0 in the form ax + by + c = 0.
Remember that you can add 0 times y.
How can you write the equation 2 = 4 - x in standard form?
First, isolate x.
What form can you express x + 4 = 0?
Consider how x can just represent itself.
True or False: A linear equation can have more than one solution.
Think about plotting and intersections.
Given the equation 3x + 8y = 12, find four solutions using a range of x values.
These will form ordered pairs.
Convert the following real-life scenario into a linear equation: A phone plan costs $10 a month plus $0.05 per minute you talk. Find an equation representing total costs based on minutes.
Look for fixed and variable costs.
4 more questions in this section. Enroll free to practise them all.
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