What is the slope of the line x= -1

The jones farm has 24 cows that each produce 52 quarts of milk a day. how many quarts are produced each day altogether

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

Find the value of the variable and the length of each secant segment.