Please Help, I've been working on it but kind find much, and I don't want to get it wrong

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c?

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.

Which shows how to solve the equation 3/4x=6 for x in one step?