# 6.6.1 SPM practice 3 (Linear Law) – Question 1

Question 1
The following table shows the corresponding values of two variables, x and y, that are related by the equation $y=p{k}^{\sqrt{x}}$ , where p and k are constants.

(a) Plot $log 10 y$ against $x$  .  Hence, draw the line of best fit

(b) Use your graph in (a) to find the values of p and k.

Solution
Step 1 : Construct a table consisting X and Y.

Step 2 : Plot a graph of Y against X, using the scale given and draw a line of best fit