Slopes of Vertical and Horizontal Lines

There are two acronyms that can be very helpful when dealing with slopes of vertical and horizontal lines. There are two acronyms that can be very helpful when dealing with slopes of vertical and horizontal lines. VNOX and HOY There are two acronyms that can be very helpful when dealing with slopes of vertical and horizontal lines. VNOX and HOY What strange little words... let's see how they help! VNOX NO - V - X - Their equation is in the form x = a constant Vertical Lines Have no slope or undefined slope HOY H - O - Y - Their equations are in the form y = a constant. Horizontal Lines Have slope = 0 Now, using these acronyms, let's take a quiz! undefined ? What are the slopes of the following lines? y x 0 ? y x What is the slope of the line y=-3? Undefined 0 -3 What is the equation of a line that passes through the point (5,-5) and has an undefined slope? x = 5
What is the slope of the line that is parallel to
0 Undefined 1 None of the above. What is the slope of the line that is perpendicular to x=5? 0 Undefined Not enough information to answer. What is the equation of the line that has slope=0 and passes through (-2,-5)? y=-2 x=-2 y=-5 x=-5 What is the slope of the line x=-8? Undefined 0 -8 What is the slope of the line parallel to y=8? 0 Undefined 8 What is the slope of the line perpendicular to y=8? 0 Undefined 8 |

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