Right so i have a line graph, i have picked 2 points
Point 1 (1, 40)
Point 2 (8, 200)
The C = 20 (intercepts at 20)
M = (200 - 40) / (8 - 1)
M = 160/7 = 22.8 = 23 rounded up
Right so M = 23 x ALONG + 20 ?
When i do
M = 23 x (8 point i picked) + 20 i get 204
Could someone help me please !
Maths is fucked up lol