Help please.​

Using the graph below, select all statements that are true. a. f(0.6)=0 b. f(-3.2)=-3 c. f(5.1)=5 d. this is the graph of the greatest integer function. e. this graph is one-to-one.

What is the slope of the line that contains the points (-2,1) and (0,-3)

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