input the numbers, it is recommended that you know how to do this type of math. If you are using this for something where it matters if you get the question right or wrong, be careful... plz do not type letters where there should be numbers and do not use fractions (large value decimals may work; ex: 0.5)
NOTE: parabolas from quadratic equations will not look like they should, the scale is off. for more detailed parabolas go to https://scratch.mit.edu/projects/208228523/
