If L is a line through (-1,3) and (4,2), for what value of k is (3,k) on L?
Answer»
-2 0 2.2 2.5
Solution :The SLOPE of the LINE is `(2-3)/(4-(-1))=-(1)/(5)`. Therefore, `(K-2)/(3-4)=-(1)/(5)`. Cross-multiplying yields 5k-10=1, so k`=(11)/(5)=2.2`. [2]