Given the function y = K (3x + 4) - 5, when x = 1, y = 2 (1) find the value of K (2) if (m, - 2) on this function image, find the value of M

Given the function y = K (3x + 4) - 5, when x = 1, y = 2 (1) find the value of K (2) if (m, - 2) on this function image, find the value of M

1、
x=1,y=2
Then 2 = K (3 + 4) - 5
k=1
So y = 3x + 4-5
That is y = 3x-1
2、
x=m,y=-2
So - 2 = 3m-1
m=-1/3