Photo AI
14 y is inversely proportional to x² y = 44 when x = a Show that y = 5.5 when x = 2a - Edexcel - GCSE Maths - Question 15 - 2018 - Paper 3
Question 15
14 y is inversely proportional to x² y = 44 when x = a Show that y = 5.5 when x = 2a
Worked Solution & Example Answer:14 y is inversely proportional to x² y = 44 when x = a Show that y = 5.5 when x = 2a - Edexcel - GCSE Maths - Question 15 - 2018 - Paper 3
Step 1
Step 2
Step 3
Show that y = 5.5 when x = 2a
Answer
Next, we need to find y when x = 2a. Using our equation again:
Substituting k:
This simplifies to:
However, we need to show that y equals 5.5.
If we reconsider the inversion:
Thus:
When x = 2a, substituting into the original equation gives:
Reevaluating this as:
This leads to an inconsistency; however, further checks or interpretations within the context of the problem may yield the intended target value more accurately.