Math question: Find the equation of a line passing through (2, 5) and (4, 9) using slope-intercept form.
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Math question: Given triangle ABC, angle bisector BD intersects side AC at point D. If angle B is 50 degrees and angle C is 80 degrees, find the measure of angle A. (
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Question: "Factorize the expression 4x² - 9y² using the distributive property.