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If the line (y=(k+4)x-2) has slope (9), what is (k)?
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Answer and explanation
Correct answer: \(5\)
A line in the form \(y=mx+c\) has slope \(m\). Here, the coefficient of \(x\) is \(k+4\), so \(k+4=9\). Therefore, \(k=9-4=5\). Option \(9\) is the slope, not the value of \(k\). Exam tip: In \(y=mx+c\), identify the coefficient of \(x\) as the slope.
Frequently asked questions
What is the correct answer to this question?
\(5\)
Why is this the correct answer?
A line in the form \(y=mx+c\) has slope \(m\). Here, the coefficient of \(x\) is \(k+4\), so \(k+4=9\). Therefore, \(k=9-4=5\). Option \(9\) is the slope, not the value of \(k\). Exam tip: In \(y=mx+c\), identify the coefficient of \(x\) as the slope.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Slope and y-intercept.
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