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Basile [38]
3 years ago
6

Is each line parallel, perpendicular, or neither parallel nor perpendicular to the line −2x+3y=12? Drag each choice into the box

es to correctly complete the table. Parallel Perpendicular Neither −2x+y=123x+2y=−2y=23x−1−2x+3y=11
Mathematics
2 answers:
jeka57 [31]3 years ago
5 0

We are given first equation: −2x+3y=12.

Converting it in slope-intercept form

3y=2x + 12

y= 2/3 x + 12/3

y= 2/3 x + 4.

Slope of the given equation is 2/3.

<u>Note:</u><em> When slopes are same, lines would be parallel.</em>

<em>When slope are negative reciprocals, lines would be perpendicular.</em>

<em>When neither same nor negative reciprocal, the lines neither parallel nor perpendicular.</em>


1) First option : -2x+y=12.

In slope-intercept form y = 2x +12.

Slope is 2 there.

<h3>Neither parallel nor perpendicular to the line −2x+3y=12.</h3>

2) 3x+2y=-2

In slope-intercept form y = -3/2 x - 1.

Slope = -3/2.

Slope are negative reciprocal to slope of −2x+3y=12 equation.

<h3>Therefore, lines are perpendicular.</h3>

3) y=2/3x-1

Slope = 2/3.

<h3>Slopes are same therefore lines are parallel.</h3>

4) -2x+3y=11

y = 2/3 x + 11/3.

<h3>Slopes are same therefore lines are parallel.</h3>
Andre45 [30]3 years ago
5 0

Solution

To solve this problem we will use the form of line y=mx+c with slope of the line= m.

Two lines are parallel if their slopes are equal that is m1=m2

And two lines are perpendicular if the product of their slopes = -1 that is m1.m2= -1

given line -2x+3y=12 ⇒ 3y=12+2x ⇒y=4+2x/3 ⇒ slope(m1) = 2/3

(1) L1: -2x+y=12 ⇒ y=2x+12 ⇒ slope (m2)= 2

By observation m1≠m2 and m1×m2≠ -1

∴ this line is neither parallel nor perpendicular.

(2) L2: 3x+2y= -2 ⇒ y=-3x/2-1 ⇒ slope (m2)= -3/2

By observation m1×m2= -1

∴ this line is perpendicular to given line.

(3) L3: y=23x-1 ⇒ slope (m2)= 23

By observation m1≠m2 and m1×m2≠ -1

∴ this line is neither parallel nor perpendicular

(4) L4: -2x+3y=11 ⇒ y=2x/3+11/3 ⇒ slope (m2)= 2/3

By observation m1=m2

∴ this line is parallel to given line.

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