Problema Solution
Use the slope formula to determine the slope of the line that passes through the points A(-5, 9) and B(-5, 6).
Answer provided by our tutors
The "point-slope" form of the equation of a straight line is:
y - y1 = m(x - x1)
where the slope m = (y2 - y1)/(x2 - x1)
m = (6 - 9)/(-5-(-5))
m = -3/0
this means the line is parallel to y-axis and the formula is x = -5.