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What are the slope and y-intercept of 7x − 8y + 24 = 0?

Answer and explanation

Correct answer: Slope 7/8, y-intercept 3

The governing concept is slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept. Rearrange the equation 7x − 8y + 24 = 0 by moving the other terms: −8y = −7x − 24. Dividing every term by −8 gives y = (7/8)x + 3. Comparing this with y = mx + b, we obtain m = 7/8 and b = 3, so option A is correct. The intercept can be checked independently by putting x = 0 in the original equation: −8y + 24 = 0, which gives y = 3. Option B has both signs wrong, while options C and D use original coefficients without first isolating y.

Related tags

Slope Intercept FormY InterceptLinear EquationSlope Intercept FormLinear Equations In Two VariablesMathematicsClass 9 Mcq

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