The equation of direct variation signifies a connection in which a rise or fall in one variable is proportionately mirrored in another variable. In order to derive this equation, one must ascertain the constant of variation (k) by carrying out a division of y by x. The resultant formula is y=kx.
| Topic | Problem | Solution |
|---|---|---|
| None | 23.甲、乙二人练习跑步, 若甲让乙先跑10米, 则甲跑5秒可追上乙; 若乙比甲先跑2秒, 则甲跑… | Form two equations based on the given information: \(x = y + 2\) and \(4x = 6y\) |