https://github.com/phetsims/phet-io/issues/1370
https://github.com/phetsims/phet-io/issues/1370

Signed-off-by: Chris Malley <74b2712074b149d140079dbd7e875955d192e617@pixelzoom.com>

phetsims/graphing-quadratics,phetsims/graphing-quadratics,phetsims/graphing-quadratics