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What are the slope and y-intercept of 2x − 3y + 9 = 0?

Answer and explanation

Correct answer: slope = 2/3, y-intercept = 3

Use the standard slope-intercept form y = mx + c. Starting from 2x - 3y + 9 = 0, move the x-term and constant to the right: -3y = -2x - 9. Divide every term by -3, remembering that both signs change: y = (2/3)x + 3. The coefficient of x is therefore the slope m = 2/3, and the constant term is the y-intercept c = 3. Hence option A is correct. Option B results from mishandling the negative divisor. Option C confuses the coefficient of y with the slope, while option D reads values from the original equation without first isolating y. Setting x = 0 gives y = 3, which independently confirms the intercept.

Related tags

SlopeY-InterceptStandard-FormSign-HandlingSlope And Y InterceptIntroduction To PolynomialsMathematicsClass 9 Mcq

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