Explore a vast range of topics and get informed answers at IDNLearn.com. Our platform is designed to provide quick and accurate answers to any questions you may have.

Write an equation of a line perpendicular to line CD in slope-intercept form that passes through the point [tex]\((-1, 6)\)[/tex].

A. [tex]\( y = -0.5x - 5.5 \)[/tex]
B. [tex]\( y = -0.5x + 5.5 \)[/tex]
C. [tex]\( y = 2x + 13 \)[/tex]
D. [tex]\( y = 2x - 13 \)[/tex]


Sagot :

Sure, let's solve this step-by-step:

1. Identify the slope of the given line:
The equation of the given line is [tex]\( y = -0.5x + B \)[/tex]. Here, the slope ([tex]\(m\)[/tex]) of this line is -0.5.

2. Determine the slope of the perpendicular line:
The slope of a line perpendicular to another is the negative reciprocal of the original line's slope.
- The negative reciprocal of -0.5 is [tex]\( \frac{1}{0.5} = 2 \)[/tex].

3. Equation of the perpendicular line in point-slope form:
We are given that this perpendicular line passes through the point [tex]\((-1, 6)\)[/tex].
- The point-slope form of the equation of a line is [tex]\( y - y_1 = m(x - x_1) \)[/tex], where [tex]\( m \)[/tex] is the slope and [tex]\((x_1, y_1)\)[/tex] is the given point.
- Here, [tex]\( m = 2 \)[/tex], [tex]\( x_1 = -1 \)[/tex], and [tex]\( y_1 = 6 \)[/tex].

4. Substitute the known values into the point-slope form:
[tex]\[ y - 6 = 2(x - (-1)) \][/tex]
Simplify:
[tex]\[ y - 6 = 2(x + 1) \][/tex]

5. Convert to slope-intercept form ([tex]\( y = mx + b \)[/tex]):
[tex]\[ y - 6 = 2x + 2 \][/tex]
Add 6 to both sides:
[tex]\[ y = 2x + 8 \][/tex]

So, the equation of the perpendicular line in slope-intercept form that passes through the point [tex]\((-1, 6)\)[/tex] is [tex]\( y = 2x + 8 \)[/tex].

Given the options:
- [tex]\( y = -0.5x - 5.5 \)[/tex]
- [tex]\( y = -0.5x + 5.5 \)[/tex]
- [tex]\( y = 2x + 13 \)[/tex]
- [tex]\( y = 2x - 13 \)[/tex]

None of these match our result of [tex]\( y = 2x + 8 \)[/tex]. It seems there might be a small discrepancy in the provided options, but the correct result according to our steps is indeed [tex]\( y = 2x + 8 \)[/tex].
Thank you for using this platform to share and learn. Don't hesitate to keep asking and answering. We value every contribution you make. IDNLearn.com provides the best answers to your questions. Thank you for visiting, and come back soon for more helpful information.