Answer:
Step-by-step explanation:
1: find the perpendicular gradient - this is the negative reciprocal of the original gradient:
2: Substitute in the coordinate to find the value of c:
3: Put it all together:
Answer:
or 
Step-by-step explanation:
or 
Answer:
Submarine W. the closest submarine is the one with the lowest depth, -1.5 km (which should actually be written as an absolute value, 1.5km, depth can't be negative).
83 x 72 = 5,976. 82 x 73 = 5,986. The way to do this is to take the two biggest numbers and use them in the tens place. Then take the other numbers and put them in the ones space. Then switch the ones slot numbers around to get two different numbers over 5000.
