Home work 9/7 Evaluate the function f(x ) = - 3x2+2x at the given input 6 . write the domain of the function F(x ) = 13-x in interval notation 11. determine weather the lines given by the equation below are parallel , perpendicular or neither. y = 3 / 4 x + 1 - 3 x + 4 4 = 1 5. Find the area of a parallelogram bounded by the y-axis the line X = 3 , the line F ( x ) = 1 + 2 x and the line parallel to F ( x ) passing through ( 2, 7 ) 4. Explain the diffrence between a postive and negative correlation coefficient