Line Equation-Slope-Distance-Midpoint-Y intercept Calculator Quiz

{"1":{"question":"What is the slope of the line passing through points (1, 7) and (5, 19)?","answer_a":"5","answer_b":"0","answer_c":"4","answer_d":"3","answer_correct":"D","mcurl":"slope.php?xone=1&yone=7&slope=+&xtwo=5&ytwo=&bvalue=+&pl=You+entered+2+points"},"2":{"question":"What is the slope of the line passing through points (7, 5) and (8, 13)?","answer_a":"5","answer_b":"9","answer_c":"8","answer_d":"10","answer_correct":"C","mcurl":"slope.php?xone=7&yone=5&slope=+&xtwo=8&ytwo=&bvalue=+&pl=You+entered+2+points"},"3":{"question":"What is the slope of the line passing through points (8, -10) and (9, 4)?","answer_a":"16","answer_b":"14","answer_c":"17","answer_d":"15","answer_correct":"B","mcurl":"slope.php?xone=8&yone=-10&slope=+&xtwo=9&ytwo=&bvalue=+&pl=You+entered+2+points"},"4":{"question":"A line passes through points (8, 25) and (9, 28). 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