เพิ่มเส้นตัดให้กราฟ

 <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
    <script type="text/javascript">
      google.charts.load('current', {'packages':['corechart']});
      google.charts.setOnLoadCallback(drawChart);
      function drawChart() {
        var data = google.visualization.arrayToDataTable([
          ['1', 'INQ'],
          [ <?=$data2?>, <?=$data1?>],    
        ]);
        var options = {
        	pointSize: 15,
			pointShape: { type: 'star', sides: 5, dent: 0.2 },
          	title: '',
           	colors: ['orange'],
           	opacity: ['0.8'],
          	hAxis: {title: 'Creativity', minValue: 0, maxValue: 7},
          	vAxis: {title: 'Risk Taking', minValue: 0, maxValue: 7},
          	legend: 'none' 
        };
        var chart = new google.visualization.ScatterChart(document.getElementById('chart_div'));
        chart.draw(data, options);
      }

    </script>	
	<div id="chart_div" style="width:500px; height: 500px;"></div>