Sin

import math
import sys

from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QSlider
from PyQt5.QtChart import QChart, QChartView, QLineSeries
from numpy import arange


class Window(QWidget):
    def __init__(self):
        super().__init__()
        self.setGeometry(200, 200, 600, 400)
        self.setWindowTitle("График пиццы")
        self.k = 1

        self.series = QLineSeries()
        for x in arange(-10, 10, 0.003):
            y = math.sin(self.k * x)
            self.series.append(x, y)

        chart = QChart()
        chart.addSeries(self.series)
        chart.setAnimationOptions(QChart.SeriesAnimations)
        chart.setTitle("Синусоида")
        chart.setTheme(QChart.ChartThemeBlueCerulean)
        chart.createDefaultAxes()

        chartview = QChartView(chart)

        vbox = QVBoxLayout()
        sld = QSlider(Qt.Horizontal, self)

        sld.valueChanged[int].connect(self.changeValue)
        vbox.addWidget(chartview)
        vbox.addWidget(sld)
        self.setLayout(vbox)

    def changeValue(self, k):
        self.k = k / 10
        self.series.clear()
        for x in arange(-10, 10, 0.003):
            y = math.sin(self.k * x)
            self.series.append(x, y)


App = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(App.exec())