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If (y=132-11x), which value of (x) gives (y=55)?
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Answer and explanation
Correct answer: 7
Put y=55 in the equation: 132-11x=55. Therefore, 11x=132-55=77, so x=7. Hence, 7 is the correct option. If x=6, the value of y is 66, not 55. Exam tip: Substitute the target value of y first, then isolate the x-term.
Frequently asked questions
What is the correct answer to this question?
7
Why is this the correct answer?
Put y=55 in the equation: 132-11x=55. Therefore, 11x=132-55=77, so x=7. Hence, 7 is the correct option. If x=6, the value of y is 66, not 55. Exam tip: Substitute the target value of y first, then isolate the x-term.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Linear growth and decay.
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