Pair of Linear Equations in Two Variables Quiz
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1. What is the graphical representation of a pair of linear equations in two variables?
A single point · Two intersecting lines · Two parallel lines · A curve
2. If two lines represented by the equations ax + by + c1 = 0 and ax + by + c2 = 0 are parallel, what can be inferred about c1 and c2?
c1 = c2 · c1 > c2 · c1 < c2 · c1 and c2 are not equal
3. Which of the following methods can be used to solve a pair of linear equations?
Graphical method only · Substitution method only · Elimination method only · All of the above
4. What is the solution of the equations 2x + 3y = 6 and 4x + 6y = 12?
No solution · Infinitely many solutions · One unique solution · Two solutions
5. In the elimination method, what is the main objective?
To eliminate one variable · To find the slope of the line · To convert to quadratic equations · To graph the equations
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