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gladu [14]
2 years ago
15

On a coordinate plane, line M N goes through points (2, 3) and (negative 3, 2). Point K is at (3, negative 3). Which point could

be on the line that is perpendicular to Line M N and passes through point K? (0, −12) (2, 2) (4, 8) (5, 13)
Mathematics
2 answers:
Fynjy0 [20]2 years ago
8 0

MN goes through

  • (2,3)
  • (-3,2)

Slope:-

  • m=2-3/-3-2=-1/-5=1/5

Slope of perpendicular line:-

  • -5

Passes through k(3,-3)

Equation in point slope form

  • y-y1=m(x-x1)
  • y+3=-5(x-3)
  • y+3=-5x+15
  • y=-5x+12

Check one by one

  • 0=-5(-12)+12=60+12=72
  • 2=-5(2)+12=-10+12=2

Yes option B is correct

antiseptic1488 [7]2 years ago
3 0

Answer:

(2, 2)

Step-by-step explanation:

First find the slope of the line MN, using the two given points:

\sf let\:(x_1,y_1)=(2,3)

\sf let\:(x_2,y_2)=(-3,2)

\implies \sf slope\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{2-3}{-3-2}=\dfrac15

If two lines are perpendicular to each other, the product of their slopes will be -1.

Therefore, the slope (m) of the line perpendicular to MN is:

\implies \dfrac15 \times m=-1

\implies m=-5

Using the point-slope form of the linear equation with point K (3, -3), we can construct the linear equation of the line perpendicular to MN:

\sf y-y_1=m(x-x_1)

\implies \sf y-(-3)=-5(x-3)

\implies \sf y=-5x+12

Now we have the equation of the line perpendicular to MN, we can input the x-values of the solution options to see which once is correct:

x=0\implies \sf y=-5(0)+12=12\implies (0,12)

x=2\implies \sf y=-5(2)+12=2\implies (2,2)

x=4\implies \sf y=-5(4)+12=12\implies (4,-8)

x=5\implies \sf y=-5(5)+12=-13\implies (5,-13)

Therefore, the point that is on the line that is perpendicular to MN and passes through point K is (2, 2)

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