using a scale of 2 cm to 1 unit on x-axis and 2 cm to 10 units on y axis on a graph of the relationship for - 3 is less than or equal to x is less than or equal to 5 .using the same scale and axis draw the graph of y equals X + 6 . estimate from the graph, correct to one decimal place the least value for y and the value for X for which it occurs.