SOLUTION: The slope of AB is�2/5.�A(3, k) is a point on the line AB.� Find k if B(-7, 0).

SOLUTION: The slope of AB is�2/5.�A(3, k) is a point on the line AB.� Find k if B(-7, 0).

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Question 831313: The slope of AB is�2/5.�A(3, k) is a point on the line AB.� Find k if B(-7, 0).
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Form the expression for slope using the given coordinates for A and B, and you already know this slope must be 2/5. Find k.

(k-0)/(3-(-7))=2/5
k/10=2/5
k=20/5
k=4
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