Looking for reliable answers? Westonci.ca is the ultimate Q&A platform where experts share their knowledge on various topics. Experience the ease of finding quick and accurate answers to your questions from professionals on our platform. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

What is the equation, in point-slope form, of the line that is perpendicular to the given line and passes through the point [tex]$(-4,3)$[/tex]?

A. [tex]\( y - 3 = -2(x + 4) \)[/tex]
B. [tex]\( y - 3 = -\frac{1}{2}(x + 4) \)[/tex]
C. [tex]\( y - 3 = \frac{1}{2}(x + 4) \)[/tex]
D. [tex]\( y - 3 = 2(x + 4) \)[/tex]


Sagot :

To find the equation of the line that is perpendicular to the given line and passes through the point [tex]\((-4, 3)\)[/tex], we'll follow these steps:

1. Identify the slope of the given line:
The given line's equation is in point-slope form: [tex]\( y - 3 = -2(x + 4) \)[/tex]. The coefficient of [tex]\( x \)[/tex] in this equation is the slope, which is [tex]\(-2\)[/tex].

2. Calculate the slope of the perpendicular line:
The slope of the line perpendicular to another line is the negative reciprocal of the slope of the given line. If the slope of the given line is [tex]\( m \)[/tex], the slope of the perpendicular line [tex]\( m' \)[/tex] is given by [tex]\( m' = -\frac{1}{m} \)[/tex].

Given slope [tex]\( m = -2 \)[/tex], the perpendicular slope [tex]\( m' = -\frac{1}{-2} = \frac{1}{2} \)[/tex].

3. Use the slope and point to write the equation:
The equation of the line in point-slope form is given by:
[tex]\[ y - y_1 = m'(x - x_1) \][/tex]
Substituting the point [tex]\((-4, 3)\)[/tex] and the perpendicular slope [tex]\( \frac{1}{2} \)[/tex] into the equation, we get:
[tex]\[ y - 3 = \frac{1}{2}(x + 4) \][/tex]

Therefore, the equation of the line that is perpendicular to the given line and passes through the point [tex]\((-4, 3)\)[/tex] is:
[tex]\[ y - 3 = \frac{1}{2}(x + 4) \][/tex]