Luna calculates d, and also the distance d, from the point E to the line through D and F and notices that d DE = d2 DF. Without any further calculation, explain why this must be true.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
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Chapter9: Quadratic Functions And Equations
Section9.7: Solving Systems Of Linear And Quadratic Equations
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c please

(c)
Luna calculates d, and also the distance d, from the point E to the line through D and F and notices that di DE =
d, DF . Without any further
calculation, explain why this must be true.
Transcribed Image Text:(c) Luna calculates d, and also the distance d, from the point E to the line through D and F and notices that di DE = d, DF . Without any further calculation, explain why this must be true.
Violet chooses four points D, E, F, G in R³, and decides to tell Luna some of the coordinates. However, Violet decides to withhold two of the coordinate
values, and labels them x and z instead. Violet shows Luna the following list:
D= (3,1,0),
E3 (2,5, г).
F = (x, 6, –3),
G = (4,0,1).
Violet also says to Luna, "The points D, E, F, G are the vertices of a parallelogram, though I won't tell you the order of its vertex labelling."
(a)
Help Luna find x and z.
Number
Number
(b)
Find the distance di from the point F to the line through D and E and enter its exact value in the box below:
di
Transcribed Image Text:Violet chooses four points D, E, F, G in R³, and decides to tell Luna some of the coordinates. However, Violet decides to withhold two of the coordinate values, and labels them x and z instead. Violet shows Luna the following list: D= (3,1,0), E3 (2,5, г). F = (x, 6, –3), G = (4,0,1). Violet also says to Luna, "The points D, E, F, G are the vertices of a parallelogram, though I won't tell you the order of its vertex labelling." (a) Help Luna find x and z. Number Number (b) Find the distance di from the point F to the line through D and E and enter its exact value in the box below: di
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