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If (c=-9) and (m-c=16) in (y=mx+c), what is the slope?
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Answer and explanation
Correct answer: 7
In the form (y=mx+c), m represents the slope. Given (m-c=16) and (c=-9), we get (m-(-9)=16), or (m+9=16). Hence, (m=7), so 7 is the correct option. If m were 8, then (m-c=8-(-9)=17), not 16. Exam tip: subtracting a negative value changes it to addition.
Frequently asked questions
What is the correct answer to this question?
7
Why is this the correct answer?
In the form (y=mx+c), m represents the slope. Given (m-c=16) and (c=-9), we get (m-(-9)=16), or (m+9=16). Hence, (m=7), so 7 is the correct option. If m were 8, then (m-c=8-(-9)=17), not 16. Exam tip: subtracting a negative value changes it to addition.
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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