self Maths Puzzle

In the xy-coordinate system, if (a,b) and (a+3,b+k) are two points on the line defined by the equation x=3y-7, then k=

Read Solution (Total 1)

(x , y) = (a , b) => a = 3b + 7

(x , y) = ( a + 3 , b + k) => (a + 3 )= 3(b+k) + 7

=> (3b + 7) + 3 = 3b + 3k + 7
=> k = 1
11 years agoHelpfull: Yes(1) No(0)

self Other Question

the population of a town is 15000.If the
number of males increases by 8% and that of females by 10%, then the population would increase to 16300. Find the number of females in the town. root{6+root[6+root(6+...upto infinity)]}