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If two lines have the same slope but different y-intercepts, which conclusion is correct?

Answer and explanation

Correct answer: No solution

For a line written as y = mx + c, m is its slope and c is its y-intercept. If two lines have the same slope, they have the same direction. Different y-intercepts mean that they cross the y-axis at different points, so they are not the same line. Consequently, they are distinct parallel lines and cannot meet at any common point. The associated pair of linear equations therefore has no solution, making option B correct. A unique solution requires different slopes and an intersection. Infinitely many solutions occur only when both slope and intercept are equal, because then the two equations describe the same line. Thus option C and option D are not separate valid conclusions here; coincident lines require equal intercepts as well.

Related tags

SlopeParallel LinesNo SolutionCoincident LinesConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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