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Andrej [43]
3 years ago
13

Triangle ABC has been rotated 90° to create triangle DEF. Write the equation, in slope-intercept form, of the side of triangle A

BC that is perpendicular to segment EF. You must show all work to receive credit.

Mathematics
2 answers:
Gekata [30.6K]3 years ago
8 0
  • B(4,5)
  • C(1,2)

Finding slope

\\ \rm{:}\twoheadrightarrow Slope=m=\dfrac{y_2-y_1}{x_2-x_1}

\\ \rm{:}\twoheadrightarrow m=\dfrac{2-5}{1-4}

\\ \rm{:}\twoheadrightarrow m=\dfrac{-3}{-3}

\\ \rm{:}\twoheadrightarrow m=1

Now

\\ \rm{:}\twoheadrightarrow y-5=1(x-4)

SolVing

\\ \rm{:}\twoheadrightarrow y-5=x-4

\\ \rm{:}\twoheadrightarrow y=x-4+5

\\ \rm{:}\twoheadrightarrow y=x+1

Contact [7]3 years ago
5 0

Answer:

  • y = x + 1

Step-by-step explanation:

As per picture, EF ⊥ BC.

B has coordinates (4, 5) and C has coordinates (1, 2).

<u>Slope of the line BC:</u>

  • m = (5 - 2)/(4 - 1) = 3/3 = 1

<u>Use point-slope formula and one of the coordinate pairs:</u>

  • y - 5 = 1(x - 4)
  • y = x - 4 + 5
  • y = x + 1
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==========================================

Short Explanation:

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Longer Explanation:

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