Question

Determine the value of ‘b’ if (-1,10) is a solution of the equation 3x+by =
27. Also find the coordinates of the point on its graph for which x =7.

Answer 1

Answer:

b= 3

Solution : 3x+by=27

3(-1)+b(10) = 27

-3 + b10 = 27

b10 = 27+ 3

b10 = 30

b = 30/10

b= 3

Easy