Thread: Linear law problem

The diagram shows part of a straight line obtained by plotting log₁₀ y against log₁₀ x for two variables x and y. Find
a) log₁₀ y in terms of log₁₀ x
b) y in terms of x
c) the valve of x when y = 40

Can teach me how to do??

How far have you gotten on this?

Hint: The "log(y) and log(x)" act as y and x values. So your line on the graph will be of the form:
, where m and b are the usual slope of the line, and b is the y-intercept.

-Dan