Which option has equal growth of (3) per step?
Answer and explanation
Correct answer: \(y=7+3x\)
In \(y=7+3x\), the coefficient of \(x\) is \(3\). Therefore, when \(x\) increases by 1, \(y\) increases by 3 each time. In \(y=7-3x\), the value decreases by 3, while \(y=7+x\) grows by only 1 per step. Exam tip: in a linear equation \(y=a+bx\), \(b\) gives the change per step.
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What is the correct answer to this question?
\(y=7+3x\)
Why is this the correct answer?
In \(y=7+3x\), the coefficient of \(x\) is \(3\). Therefore, when \(x\) increases by 1, \(y\) increases by 3 each time. In \(y=7-3x\), the value decreases by 3, while \(y=7+x\) grows by only 1 per step. Exam tip: in a linear equation \(y=a+bx\), \(b\) gives the change per step.
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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