График 2:new Chart('graphCanvas2', {type: 'line', data: {labels: [-4, -2, 0, 2, 4], datasets: [{label: 'y = -1/(8x)', data: [0.25, 0.5, 'NaN', -0.5, -0.25], borderColor: 'red', fill: false}]}, options: {scales: {x: {display: true, title: {display: true, text: 'x'}}, y: {display: true, title: {display: true, text: 'y'}}}, tension: 0.4}});