17.0k views
4 votes
Which equation describes a line that passes through (-6,8) and is perpendicular to the line described by y=2x-4

2 Answers

5 votes

Final answer:

The equation of the line that passes through (-6, 8) and is perpendicular to y = 2x - 4 is y = -1/2x + 5.

Step-by-step explanation:

To find the equation of a line that is perpendicular to a given line, we need to determine the negative reciprocal of the slope of the given line. The slope of the given line y = 2x - 4 is 2. Therefore, the slope of the perpendicular line would be -1/2.

Using the point-slope formula, y - y1 = m(x - x1), where (x1, y1) is the given point (-6, 8) and m is the slope (-1/2), we can substitute the values and simplify the equation to find the equation of the perpendicular line.

Thus, the equation of the line that passes through (-6, 8) and is perpendicular to y = 2x - 4 is y = -1/2x + 5.

User Fermin
by
8.2k points
2 votes

Step-by-step explanation:

Hey, there!!

The given is a point (-6,8) through which a line passes. And is perpendicular to the line y = 2x-4

The equation for point (-6,8) is,

(y-8)= m1(x+6)...........(i)

and given equation is y = 2x-4............(ii)

Now, from equation (ii).

slope (m2)= 2 { as equation (ii) is in the form of y= mx+c where m is a slope}.

Now, For perpendicular,

m1×m2= -1

m1×2= -1


m1 = ( - 1)/(2)

Therefore, m1 = -1/2.

Putting, the value of m1 in equation (i).

(y-8) = -1/2×(x+6)

2(y-8)= -1(x+6)

2y - 16 = -x -6

x+2y-10 = 0......... is the required equation.

Hope it helps...

User Vlora
by
8.1k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.