0.10 m of difference <span>in water levels between Week 2 and Week 4</span>
Check the picture below.
bearing in mind that the slope goes by different names
average rate of change
rise over run
rate of change
but is basically the same cat in disguise with different costumes.

Sasha is incorrect. you would add the 8x and the 3x not subtract them. Dante is correct because he adds 3x and 5x and he also adds 6 to both sides of the equation. Hope I helped!