Question: what is the term for how steep a line is in math
[{'answer': 'slope or gradient', 'provenance': [{'wikipedia_id': '29368', 'title': 'Slope', 'start_paragraph_id': 1, 'start_character': 20, 'end_paragraph_id': 1, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '29368', 'title': 'Slope', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 371, 'bleu_score': 0.7326353441501301, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14757213867836646766}, 'section': 'Section::::Abstract.'}]}]