answer is D. linear equations have a form of Y= mx + b. M= slope and B= y-intercept. in this case the slope is 1/2 and y-intercept is 3. This is a straight line. To graph just start at (0,3) and then go up 1 and over 2. repeat this to get all of the points. To go the opposite direction, do down 1 and left 2.
