title: Creating a sensible line chart to compare the average with the actual
body: <p>I have the following dataset </p>
  
  <p><img src="https://i.stack.imgur.com/vDmNn.png" alt="enter image description here"></p>
  
  <p>I want to create a line chart comparing the historical average vs 2016 monthly highway fatalities . I want to use ggplot with the graphing. </p>
  
  <p>I had more than one attempt but still I receive errors like (Error: could not find function "ggplot2")</p>
  
  <pre><code>ggplot(Homework_8_data, aes(x = Months)) + 
  
    geom_(aes(y = Ave_since_2002), colour="blue") + 
  
    geom_line(aes(y = X2016), colour = "grey") + 
  
    ylab(label="Average and actual highway fatalities") + 
  
    xlab(label="Months")
  </code></pre>
  
  <p>I need someone help me understand the error I did and correct it for me.
  Thanks</p>