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In the line (y=-6x+13), what change occurs in (y) when (x) increases by (1)?

Answer and explanation

Correct answer: (y) decreases by 6

The line is in the form y=mx+c, where m is the slope. Here, m=-6. Therefore, when x increases by 1, the change in y is -6, meaning y decreases by 6. The number 13 is the y-intercept; it does not give the change in y for a one-unit change in x. Exam tip: In y=mx+c, the change in y for an increase of 1 in x is exactly m.

Related tags

Linear EquationsSlopeNegative SlopeRate Of ChangeY-InterceptClass 9 MathematicsSlope And Y InterceptIntroduction To Polynomials

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