Question

1. garis y = mx + n melalui titik (2,1) dan (-2,-11). nilai m-n adalah

Answer 1

Y = mx + n
(2,1)    -->    1 = 2m + n
(-2,-11) --> -11 = -2m + n _
                 12 = 4m
                  m = 3
2m + n = 1
2(3) + n = 1
6 + n = 1
n = 1 - 6
n = -5

m - n = 3 - (-5)
         = 3 + 5
         = 8

semoga membantu ya :)

Answer 2

M = ( -11 - 1 ) : ( -2 - 2 )
m = 3

y = 3x - ( 6 - 1 )
y = 3x - 5

n = -5

m - n = 3 + 5 = 8