*in exercises 3 and 4,write an equation of the line that passes through the given point and is parallel to the given line. 3. (1,3); y=2x-5 4. (-2,1); y= -4x+3 *in exercises 5 and 6, determine which of the lines, if any, are parallel or perpendicular. explain! 5. line a passes through (-2,3) and (1,-1). line b passes through (-3,1) and (1,4). line c passes through (0,2) and (3,-2). 6. line a: y= -4x +7 line b: x= 4y+2 line c: -4y+x=3 *in exercises 7 and 8, write an equation of the line that passes through the given point and is perpendicular to the given line. 7. (2,-3); y= 1/3x -5 8.(6,1); y= -3/5x-5 * in exercises 11-13, determine whether the statement is sometimes, always, or never true. explain your reasoning! 11. a line with a positive slope and a line with a negative slope are parallel. 12. a vertical line is perpendicular to the x-axis. 13. two lines with the same x-intercept are perpendicular.