Question

Find k,if slope of line joining the points (2,k) & (-4,2) is 1/2

Answer 1

slope of a line joining two points (a,b) and (c,d) = (d-b)/(c-a)

now

slope of line joining (2,k) & (-4,2) is 1/2

( k-2)/(2+4)=1/2

k-2=3

k=5