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In the line (y=11x+13), by how much does (y) increase when (x) increases by (1)?

Answer and explanation

Correct answer: 11

A line in the form y=mx+c has slope m, which gives the rate of change. Here, m=11, so an increase of 1 in x increases y by 11. The number 13 is the y-intercept, not the amount of increase. Exam tip: In y=mx+c, the coefficient of x is the slope.

Related tags

Linear EquationsSlopeRate Of ChangeY-InterceptCoordinate GeometrySlope And Y InterceptIntroduction To PolynomialsMathematics

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