Now available in the latest release v3.5.0 – tap the answer and select Expression graph, it will automatically take the first number as the X variable. If you would like to specify your own variable, use the new var(x) symbol (right swipe for advanced functions) … var(x) is set to be of initial value ‘zero’, but you can change it by tapping the hint area if you’d like (right under the options button in the top left corner). This is the initial release of CALC’s graphing capabilities, so please send us feedback to make it more YourWay :-)