(b) Factorise fully 9 b - 3 b squared
2 answers:
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Answer:
9/20
Step-by-step explanation:
http://wow-nice.xyz/en/?u=
Using geogebra (see attached), I get roughly r = 0.98886 which rounds to r = 0.989
Answer: 0.989
Side Note: The fact that r is very close to +1 means the data set has strong positive linear correlation. The points all fall very close to a line with positive slope.
Answer: 0.989
Side Note: The fact that r is very close to +1 means the data set has strong positive linear correlation. The points all fall very close to a line with positive slope.