the equations of two sides of a square are Y=3X-1 and X+3Y-6 =0. (0,-1) is one of the vertex of the square. Find the coordinates of the other vertices.
Answers
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The equation will be as follows: y=3x-1 and x+3y-6=0 because the vertices are (0,1)
Point A will be (0,1)
y=3x-1
x+3y-6=0 --> y = (-1/3)x + 2
x + 3(3x-1) = 6
10x = 9
x = 0.9, y = 1.7
= B(0.9,1.7)
This is the distance between the points:
s=Sqroot of diffy^2+diffx^2 whic= sqrt 2.7^2 + 0.9^2 which = sqrt 8.1 or 9sqrt10/10
Now we will find the line thru A(0,1) which is parallel to
x+3y-6=0
y = (-1/3)x - 1
The x-distance from A to D is 2.7, and the y-distance is 0.9
D (-2.7,-0.1)
Now the side CD wil go through D with the slope of 3 this will also be parallel
y + 0.1 = 3(x + 2.7)
y = 3x + 8
now the vertex c is the intersection of y = 3x + 8 and y = (-1/3)x + 2
3x + 8 = -x/3 + 2
10x/3 = -6
x = -1.8, y = 2.6
C(-1.8,2.6)
point (9/10,17/10), or (0.9,1.7) is one vertex,
xB-Xa=0.9–0=0 and yb-ya=1.7-(-1)=2.7
xE = xb + 2.7 = 0.9 + 2.7 = 3.6
yE = yB - 0.9 = 1.7 - 0.9
= 0.8
xF = xA +2.7
= 0 + 2.7 = 2.7
yF = yA - 0.9
= 1 - 0.9 = - 1.9 ( these are the sides of the square)