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I find the best way to explain maths is by using more numbers than words, so I'll use an example to explain this:

.css-14jxgv6{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:row;-ms-flex-direction:row;flex-direction:row;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;}.css-14jxgv6 div:first-child{margin:10px 10px 5px 0;}.css-14jxgv6 div:last-child{margin-left:auto;}

How do I find the equation of a line connecting points a(p,q) and b(r,s)?

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