Write the equation of the line passing through the points

left (-5, 9) and (-5,1)
in slope format
y=mx+b

3 answers

find the slope , that will be your m
slope = m = (9-1)/0

ahhh, so we have a line with undefined slope, that is, a vertical line.
Horizontal and vertical lines are the easiest ones for finding equations.
for a horizontal, x = whatever the x of the point is
for a vertical , y = whatever the y of the point is,

so. ......
tysm
Did you notice that the equation cannot be written in the form y = mx + b ?