a-vector-aaa-starts-at-p1p1p1-and-ends-at-p2p2p2-express-the-vector-aaa-in-terms

Question

A vector $a$ starts at $P_1$ and ends at $P_2$ . Express the vector $a$ in terms of $i$ and $j$ .

$P_1=(-21,-28)$ , $P_2=(0,-8)$

Accepted Answer

﻿<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>21</mn><mi>i</mi><mo>+</mo><mn>20</mn><mi>j</mi></mrow><annotation encoding="application/x-tex">21i+20j</annotation></semantics></math>21i+20j﻿

Answer

﻿<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>20</mn><mi>i</mi><mo>+</mo><mn>21</mn><mi>j</mi></mrow><annotation encoding="application/x-tex">20i+21j</annotation></semantics></math>20i+21j﻿

Answer

﻿<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>20</mn><mi>i</mi><mo>−</mo><mn>21</mn><mi>j</mi></mrow><annotation encoding="application/x-tex">20i-21j</annotation></semantics></math>20i−21j﻿

Answer

﻿<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>21</mn><mi>i</mi><mo>−</mo><mn>20</mn><mi>j</mi></mrow><annotation encoding="application/x-tex">21i - 20j</annotation></semantics></math>21i−20j﻿

A vector ﻿aaa﻿ starts at ﻿P1P_1P1​﻿ and ends at ﻿P2P_2P2​﻿. Express the vector ﻿aaa﻿ in terms of ﻿iii﻿ and ﻿jjj﻿.﻿P1=(−21,−28)P_1=(-21,-28)P1​=(−21,−28)﻿, ﻿P2=(0,−8)P_2=(0,-8)P2​=(0,−8)﻿

A vector $a$ starts at $P_1$ and ends at $P_2$ . Express the vector $a$ in terms of $i$ and $j$ .
$P_1=(-21,-28)$ , $P_2=(0,-8)$