Answer:
-7
Step-by-step explanation:
Coefficient is the number in front of x (with the highest exponent )
Equation: 3y - 6 = y + 7
y = 6.5
Step 1: Write out equation
3y - 6 = y + 7
Step 2: Solve for <em>y</em>
2y - 6 = 7
2y = 13
y = 13/2 or 6.5
(-2,-1) is where u start
Answer: 18 meters