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3 cards from this section. Quick, good the night before a test.
Find two solutions for the equation x + y = 5.
Set one variable to a simple number and solve for the other.
Write the equation 2x + y = 7 in standard form and identify a solution.
Substitute your solution back into the equation to check.
What kind of solutions do linear equations in two variables have?
Think about how changing one variable affects the other.
True or False: The equation 4x + 2y = 8 has exactly two solutions.
Consider what happens when you change x.
If 2x + y = 10, find three solutions and explain your method.
Pick simple numbers to make calculations easier.
Given the equation y = -3x + 9, graph the equation and identify three points on the line.
Set x to different values to find corresponding y's and visualize the line.
5 more questions in this section. Enroll free to practise them all.
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