The variables x and y are related by the equation , where k is a constant.
Diagram below shows the straight line graph obtained by plotting against x.
- Express the equation in its linear form used to obtain the straight line graph shown in Diagram above.
- Find the value of p.
Variable x and y are related by the equation . When the graph lg y against lg x is drawn, the resulting straight line has a gradient of -2 and an vertical intercept of 0.5 . Calculate the value of p and of q.
Variable x and y are related by the equation . When the graph y against xy is drawn the resulting line has gradient 0.25 and an intercept on the y-axis of 1.25. Calculate the value of c and of d.