I did get the one in the tux ♂️ and the other one ☝️
Becouse k and n are 'neighbours' so their sum are 180
so k=180-42=138
The equation of a line is given by y = mx + c; where m is the slope.
The given equation is 9 - x = 2y
y = -1/2 x + 9/2
Therefore, the slope is -1/2 and the y-intercept is 9/2.
