Practice Introduction (4.1) - Linear Equations In Two Variables

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9 questions

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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Write the equation $3x + 4y = 20$ in the form $ax + by + c = 0$ .
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Subtract 20 from both sides.
Question 2.
Express $y = 5$ in standard form.
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Think about the coefficients for x.
3Question 3.
What is the general form of a linear equation in two variables?
- \$x + y = c\$
- \$ax + by + c = 0\$
- \$xy + c = 0\$
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Look at the coefficients in the form.
4Question 4.
True or False: A linear equation in two variables can have exactly two solutions.
- True
- False
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Think about how many points lie on a straight line.
Question 5.
Given the linear equation $3x + 2y = 9$ , find all integer solutions.
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Try different integer values for x and calculate y.
Question 6.
Can you find a scenario in real life where two variables interact in a linear equation?
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Consider shopping or budgeting situations.

5 more questions in this section. Enroll free to practise them all.