[size=150]Check your understanding on how to calculate gradients of straight lines including vertical and horizontal lines.[br][b][color=#ff0000]Score 10 marks and stop[br][/color][/b][/size][br][br]For each question, type in only the value of the gradient as a fraction reduced to its lowest terms.[br][br]How to type in negative fractions :

gMath 互動數學教室 [url=http://www.geogebra.hk]http://www.geogebra.hk[/url]