In wolfram alpha I tried entering:
ListLinePlot[{ {15, 4.55}, {20, 1.6}, {25, 0.55} }]
I expected a line to pass through (15, 4.55), (20, 1.6) & (25, 0.55); But it instead creates a line that passes through (0, 15), (1, 4.55), (2, 20)
Can you help and tell me what I'm doing wrong? The documentation clearly states the format & I'm following the same.