(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

if vector :

line a starts from co-ordinates (0,0) and ends at (5,3)

line b starts from co-ordinates (0,0) and ends at (1,2)

What represents the vector: 2a-5b

2. Relevant equations

3. The attempt at a solution

I was initially thinking of computing Pythagorus theorem for each of the two lines.

for Line a = square root of (25+9) = square root of 24

for line b = square root of (1+4) = square root of 5

2a-5b = 2 x square root of 6 - 5 x square root of 5

which doesn't seem right...tips would be nice please.

need an answer in the form of an x and y co-ordinate

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# What represents the vector: 2a-5b

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