COSC 120    WINTER 2017   HW 02/09/2017
Distributed: 2/9/2017		Due: 2/14/2017

Plot  y1 versus x
  y1 = x + 5
  
Plot y2 versus x
  y2 = 2 * x - 10
  
Use an array of two colors (colors[])  and an array of two mark-types (marks[]).

Build the format string using colors[0] + marks[0] to plot y1.

Build the format string using colors[1] + marks[1] to plot y2.