Which rule has initial value (35) and growth of (6) per step?
Answer and explanation
Correct answer: \(y=35+6x\)
A linear rule has the form \(y=a+bx\), where \(a\) is the initial value and \(b\) is the change per step. Here, the initial value is 35 and the growth is 6, so the rule is \(y=35+6x\). In option B, 6 is subtracted, so it represents decay. Exam tip: put \(x=0\) to identify the initial value.
Frequently asked questions
What is the correct answer to this question?
\(y=35+6x\)
Why is this the correct answer?
A linear rule has the form \(y=a+bx\), where \(a\) is the initial value and \(b\) is the change per step. Here, the initial value is 35 and the growth is 6, so the rule is \(y=35+6x\). In option B, 6 is subtracted, so it represents decay. Exam tip: put \(x=0\) to identify the initial value.
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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