Response: Equation 1 – will generate a smooth line curve as per below. Here, line types are segregated by 3 categories of a drive (front-wheel drive, rear-wheel drive, 4 wheel drive) and they are represented by these 3 separate lines. The legend will also appear by default. Equation 2 – this is used to display multiple geoms. Here the consideration is represented based on values between parameters – hwy and displ. Equation 3 – This will generate a colour line curve graph and the colour will be driven by the parameter “drv”. Legends are also going to be displayed mandatorily as there is a parameter which has indicated the same.