Removing the time spent on riding the trolley:
90-36=54
And the rest of the time on the sights
Then 54/9= 6
They stopped at 6 sights
Solution :
y - 6 = -6 (x + 1)
y - 6 = -6x - 6
y = -6x - 6 + 6
y = -6x - 0
-6x - y - 0 = 0
y = -6x
The area of the larger ttaingle is 12 cm squared
