SOLUTION: If the slope of a line through the origin is 2, and the the line through (b,-2) and (a,5) is parallel to that line, what is the value of a?
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Question 717334: If the slope of a line through the origin is 2, and the the line through (b,-2) and (a,5) is parallel to that line, what is the value of a?
Answer by josgarithmetic(39625) (Show Source): You can put this solution on YOUR website!
The line through the origin, having no other x or y intercept but slope of 2, is y=2x.
The slope of the line defined by points given is , equated because that line is given as parallel to y=2x. Solve for a, and find that .
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