asked 13.8k views
3 votes
Are the lines 2x+3y-6=0 and -6x+9y+10=0 parallel, perpendicular or neither?

asked
User Mirrana
by
8.2k points

1 Answer

5 votes

Answer:

Neither

Explanation:

Relationship of slopes with parallel and perpendicular lines:

Parallel lines:

  • The slopes of parallel lines have the same slope.

Perpendicular lines:

  • The slopes of perpendicular lines are negative reciprocals of each other.

This is shown by the formula m2 = -1 / m1, where

  • m2 is the slope of one line,
  • and m2 is the slope of the other line.

Identifying the forms of 2x + 3y - 6 = 0 and -6x + 9y + 10 = 0:

Both 2x + 3y - 6 = 0 and -6x + 9y + 10 = 0 are in the general form of a line, whose general equation is given by:

Ax + By + C = 0, where

  • A, B, and C are constants.

Determining the slopes of 2x + 3y - 6 = 0 and -6x + 9y + 10 = 0:

The easiest way to identify the slope is to convert form general from to slope-intercept form, whose general equation is given by:

y = mx + b, where

  • m is the slope,
  • and b is the y-intercept.

Converting from general form to slope-intercept form:

Thus, we can convert form general form to slope-intercept form by isolating y on the left-hand side:

Converting 2x + 3y - 6 = 0 to slope-intercept form:

(2x + 3y - 6 = 0) - 2x + 6

(3y = -2x + 6) / 3

y = -2/3x + 2

Converting -6x + 9y + 10 = 0 to slope-intercept form:

(-6x + 9y + 10 = 0) + 6x - 10

(9y = 6x - 10) / 9

y = 2/3x - 10/9

Since the slopes are not the same nor are they negative reciprocals of each other, the lines are neither parallel nor perpendicular.

answered
User Shaunsantacruz
by
8.3k points

No related questions found

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.