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"customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "prompt": "<p><img src=\"resources/question-resources/Picture_curve.png\" width=\"340\" height=\"222\"/></p>\n<p>Calculate the average rate of change over an interval in a graph between points $(x0,y0) = (\\var{x0},\\var{y0})$ and $(x1,y1)= (\\var{x1},\\var{y1})$</p>\n<p>Average rate = [[0]]</p>", "gaps": [{"type": "jme", "useCustomName": false, "customName": "", "marks": 1, "showCorrectAnswer": true, "showFeedbackIcon": true, "scripts": {}, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "adaptiveMarkingPenalty": 0, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "answer": "({y1}-{y0})/({x1}-{x0})", "showPreview": true, "checkingType": "absdiff", "checkingAccuracy": 0.001, "failureRate": 1, "vsetRangePoints": 5, "vsetRange": [0, 1], "checkVariableNames": false, "singleLetterVariables": false, "allowUnknownFunctions": true, 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