Welcome to Westonci.ca, the place where your questions are answered by a community of knowledgeable contributors. Join our Q&A platform to get precise answers from experts in diverse fields and enhance your understanding. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

Write an equation of a line perpendicular to line [tex]$CD$[/tex] 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 :

To solve the problem, we need to find the equation of the line that passes through the point [tex]\((-1, 6)\)[/tex] and is perpendicular to line [tex]\(CD\)[/tex].

Step 1: Determine the slope of line [tex]\(CD\)[/tex].
- The slope of the perpendicular line ([tex]\(m_\perp\)[/tex]) will be the negative reciprocal of the slope of line [tex]\(CD\)[/tex]. Assuming the slope of line [tex]\(CD\)[/tex] is [tex]\(m_{CD} = -\frac{1}{2}\)[/tex].

Step 2: Find the slope of the perpendicular line.
- The negative reciprocal of [tex]\(-\frac{1}{2}\)[/tex] is:
[tex]\[ m_\perp = -\left(- \frac{1}{2}\right)^{-1} = -(-2) = 2 \][/tex]

Step 3: Formulate the equation of the perpendicular line in point-slope form.
- The point-slope form of a line is given by [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 point the line passes through.
- Plug in the point [tex]\((-1, 6)\)[/tex] and the slope [tex]\(2\)[/tex]:
[tex]\[ y - 6 = 2(x + 1) \][/tex]

Step 4: Convert the equation to slope-intercept form ([tex]\(y = mx + b\)[/tex]).
- Distribute and simplify:
[tex]\[ y - 6 = 2(x + 1) \implies y - 6 = 2x + 2 \implies y = 2x + 8 \][/tex]

Step 5: Verify the available options.
- The equation we derived is [tex]\(y = 2x + 8\)[/tex].

None of the provided options match [tex]\(y = 2x + 8\)[/tex]. Hence, the result is none of the options match.

Therefore, the solution concludes that none of the given options match the equation [tex]\(y = 2x + 8\)[/tex].