b(4,1),m=3

Question

i want to find out how to solve this equation of a straight line

Answer 1

y = mx + b                   Slope-intercept form.

y = 3x + b                    This "b" is not the same as the "b" in the question. This "b" is the y-intercept

 

1 = 3(4) + b                  Because (4, 1) solves the equation - is on the line

1 = 12 + b

-11 = b

 

y = 3x - 11