The endpoints of JK are J(–25, 10) and K(5, –20). What is the y-coordinate of point L, which divides JK into a 7:3 ratio?

A 7:3 ratio means L is 7/10 of the way from J to K, so its y-coordinate is (3 × 10 + 7 × (−20)) ÷ 10 = (30 − 140) ÷ 10 = −11. Therefore, the y-coordinate is −11, choice B.

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