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Class 9MathematicsIntroduction to PolynomialsSlope and y-interceptHard
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If (m+c=15) and (c=6) in (y=mx+c), what is the slope?

Answer and explanation

Correct answer: 9

In the form (y=mx+c), m represents the slope. Given m+c=15 and c=6, we get m+6=15. Therefore, m=15-6=9. Hence, the correct answer is 9. Option 8 is incorrect because subtracting 6 from 15 gives 9. Exam tip: In y=mx+c, identify m as the slope and c as the y-intercept.

Related tags

SlopeY-InterceptLinear EquationsCoordinate GeometryAlgebraic SubstitutionSlope And Y InterceptIntroduction To PolynomialsMathematics
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10 more MCQs
  1. 1What is the slope of the line (y=2x+5)?
  2. 2What is the (y)-intercept of the line (y=3x-4)?
  3. 3What is the slope of the line (y=-x+7)?
  4. 4What is the slope of the line (y=8-2x)?
  5. 5What is the (y)-intercept of the line (y=x+9)?
  6. 6What is the slope of the line (y=5x)?
  7. 7What is the (y)-intercept of the line (y=-6)?
  8. 8In the form (y=mx+c), what does (m) represent?
  9. 9In the form (y=mx+c), what does (c) represent?
  10. 10Which line has slope (4) and (y)-intercept (1)?
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