function drawAxis() {
            svg.select('.x-axis-group.axis')
                .attr('transform', `translate(0, ${chartHeight})`)
                .call(xAxis);

            svg.select('.y-axis-group.axis')
                .call(yAxis);

            svg.selectAll('.y-axis-group .tick text')
                .call(wrapText, margin.left - yAxisPaddingBetweenChart);

            drawAxisLabels();
        }
Draws the x and y axis on the svg object within their
respective groups
@private