Question 28027
<pre>find the slope intercept form of a vertical line passing through (1.5,1.9)
<font face = "lucida console" size = 4>
Slope-intercept form is

y = mx + b

where m is the slope and (0, b) is the point on the y-axis 
where the line crosses the y-axis, called the y-intercept.  

The slope of a VERTICAL line, however, is UNDEFINED!!!

The equation of the vertical line through (1.5, 1.9) is

x = 1.5

However, this is not in "slope-intercept form" because a 
vertical line has no slope,  it cannot be written in 
slope-intercept form.

All other lines besides vertical ones have slopes.

The slope of a horizontal line is 0. A HORIZONTAL, not
vertical line through (1.5,1.9) is

y = 1.9 

which can be written is slope-intercept form as

y = 0x + 1.9

But there is no answer to your question.  You're
probably supposed to answer: 

<i><u>"It has no slope-intercept form because the 

slope of a vertical line is not defined"</u></i>

Edwin
AnlytcPhil@aol.com</pre>