Select a pen and a pen color and then write a math equation on the page. On the Draw tab select the Lasso Select tool. Trace the graph with your finger.
This free math equation editor software also lets you copy the selected equations and paste them in Microsoft Word Wordpad etc.
This is an automatic graph app. Use the sliders to adjust the math equations that control the spirals. To solve quadratic equation solvers cubic equation solvers. Microsoft Math Solver.