Any line with an undefined slope is parallel to the

x-axis

y-axis

line y = x

Hence, Any line with an undefined slope is parallel to the y-axis.

Step-by-step explanation:

We know that the slope of a line is calculated as:

To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .

For the slope to be undefined the change in the x-value must be zero so that the denominator will be zero and hence the slope is undefined.

This means that x-value is constant.

This means that the line is parallel to y-axis since if the line is parallel to y-axis then the y-value changes and x remains constant.

Hence, Any line with an undefined slope is parallel to the y-axis.

all the angles opposite to the angle 150 would be 150 and all the angles that are next to 150 are 30 because they equal 180 it you add it up.

step-by-step explanation: