a Find the slope of the line through 16 8 and 18 16 b Based on the slope indicate whether the line through the points rises from left to right falls from left to right is horizontal or is vertical a Select the correct choice below and if necessary fill in the answer box to complete your choice OA The slope is Type an integer or a simplified fraction OB The slope is undefined b Choose the correct answer below OA The line is vertical OB The line through the points rises from left to right C The line through the points falls from left to right OD The line is horizontal