If (y=10-x) and (x=4), what is the value of (y)?
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Answer and explanation
Correct answer: 6
Given \(y=10-x\) and \(x=4\), substitute 4 for \(x\): \(y=10-4=6\). Hence, the correct answer is 6. The value 7 would result only if \(x=3\). Exam tip: after substitution, check the subtraction sign carefully.
Frequently asked questions
What is the correct answer to this question?
6
Why is this the correct answer?
Given \(y=10-x\) and \(x=4\), substitute 4 for \(x\): \(y=10-4=6\). Hence, the correct answer is 6. The value 7 would result only if \(x=3\). Exam tip: after substitution, check the subtraction sign carefully.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Pair of Linear Equations in Two Variables. Topic: Algebraic methods: Substitution method and Elimination method..
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