- A4
- B12
- C−4
- D−12
Step-by-Step Solution
→ → → . Dividing a positive by −3 keeps the answer negative. Check: ✓.
Answer: C) −4
In the equation , find when .
Class 9Linear Equations in Two VariablesLinear Equations
Key idea: Finding solutions to a linear equation
Pick any value for one variable; solve for the other. Repeat to get many solutions.
Example: .
- Let → . So (0, 6) is a solution (this is the -intercept).
- Let → . So (2, 3) is a solution.
- Let → . So (4, 0) is a solution (this is the -intercept).
- Let → . Same as above.
Four solutions found in seconds, and infinitely more available.
Example: .
- Let → . So (0, 6) is a solution (this is the -intercept).
- Let → . So (2, 3) is a solution.
- Let → . So (4, 0) is a solution (this is the -intercept).
- Let → . Same as above.
Four solutions found in seconds, and infinitely more available.
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Practice 5 Similar Questions Free →All Linear Equations in Two Variables practice questions