Use the parametric equations x = - 3t + 1 and y = 2/t + 1 to answer each question.
a. Find the x- and y-coordinates of the points that correspond to the values of t = 3, t = 0, and t = - 3.
b. Find the y-value that corresponds to an x-value of - 7.
c. Find the x-value that corresponds to a y-value of 4.
d. Sketch the curve for - 3 ( t ( 3, showing the direction of movement. Trace the graph and explain what happens when t = - 1.