Max made a journey of 700km partly by train and partly by bus.He started his journey at 8.00am. by train which travelled at 50km
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If a line is parallel to another line,Then the gradients are the same.So m=4 .Using general formula for str8 line, y=mx+c
sub in coorfinates (1,13)
So C=9.
sub in coorfinates (1,13)
So C=9.