title: Creating economics graphs with ggplot
body: <p>For writing my economics papers I need to create graphs that show the intuition of an underlying process. A simple example would be the graph linked at the bottom. Note the dashed lines that emphasize a point on the graph.</p>
  
  <p>How would I replicate this graph in ggplot, with</p>
  
  <ul>
  <li>both vertical and horizontal dashed lines, </li>
  <li>the round intercepting dot where the dashed lines meet</li>
  <li>Q and NIR labels at the axes?</li>
  </ul>
  
  <p>To give an example of a graph:</p>
  
  <pre><code>x &lt;- c(10:100)
  y &lt;- 1/x
  data &lt;- data.frame(x, y)
  
  ggplot(data, aes(x, y)) + geom_line()
  </code></pre>
  
  <p>Let's say I want to indicate the point (25, 0.04) as done in the example graph. How would I do that?</p>
  
  <p><a href="https://i.stack.imgur.com/Cpoka.jpg" rel="nofollow noreferrer">economics graphs</a></p>