The line with an undefined slope is line R, which is vertical. In a vertical line, the change in x is zero, leading to division by zero when calculating the slope, which is why it is considered undefined.
Which line on the graph below has an undefined slope?
On a coordinate plane, line Q is horizontal, line P has a positive slope, line R is vertical, and line S has a negative slope.
P
Q
R
S
1 answer
1 answer