Answer:
81 mm^2
Step-by-step explanation:
Area= 3*6*9/2=81 mm^2
Y = mx + c
this is the equation of line and here m is the slope
so, 2x-6y =12 can be changed into standard format
y = 2x/6 - 12/6
y=x/3 +(-2)
so, m = 1/3 , so slope will be 1/3
hope it helped :)