Help me on this question please

Issof claims that the scale factor is 1/2. which statement about his claim is correct

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.