What is the slope of a line that is perpendicular to the line y = 1?

Undefined ( ∞ )

Step-by-step explanation:

The given line is y=1

It is horizontal line on coordinate plane.

Because y=k means y become constant and x varies.

If we draw perpendicular to horizontal line then it would be vertical line.

The equation of vertical line, x=h

The slope of horizontal line is 0

The slope of vertical line is undefined.

Because vertical line makes angle with x-axis 90°

Slope = tan 90°

∵ tan 90° is undefined.

Hence, The slope of perpendicular line of y=1 is undefined.

i think it is 70

step-by-step explanation:

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5