Is the line for the equation y = - 8 horizontal or vertical? what is the slope of this line? select the best answer. a) the line is horizontal. the slope is undefined. b) the line is horizontal. the slope is 0. c) the line is vertical. the slope is undefined. d) the line is vertical. the slope is 0.
y = mx + b
where m and b are slope and y-intercept, respectively.
From the given above, there is no term involving the variable x signifying that the slope is zero. The answer therefore is letter B. The line is horizontal. The slope is 0.
all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.