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Roman55 [17]
3 years ago
5

Figure ABCD is a parallelogram with point A (−3, 2). What rule would rotate the figure 90° counterclockwise?

Mathematics
2 answers:
Sveta_85 [38]3 years ago
8 0

Answer:

C) Rule for 90° counterclockwise is x,y --- -y,x.

Step-by-step explanation:

Given : point A (−3, 2).

To find : What rule would rotate the figure 90° counterclockwise.

Solution : point A (−3, 2) would be A' ( -2, -3)

Therefore, C) Rule for 90° counterclockwise is x,y --- -y,x.

BARSIC [14]3 years ago
5 0
C x,y --- -y,x is the answer
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NNADVOKAT [17]

Answer:

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P.S. I made sure my answer was right by graphing the equation (y = -170x + 1020) on a calculator :)

Step-by-step explanation:

check picture

3 0
3 years ago
The vertices of a square CDEF are C(1,1), D(3,1), E(3,-1) and F(1,-1). What formulas prove that the diagonals are congruent perp
Oxana [17]

To prove that the diagonals are congruent, you need to formula to compute the distance between two points:

d(A,B) = \sqrt{(A_x-B_x)^2 + (A_y-B_y)^2}

Using that formula, you may prove that d(C,E) = d(D,F), which means that the two diagonals have the same length.

To prove that they are perpendicular, you need the formula to compute the slope of a segment. The slope, knowing the enpoints, is given by

m = \cfrac{\Delta y}{\Delta x} = \cfrac{A_y-B_y}{A_x-B_x}

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In fact, if one slope is the opposite of the reciprocal of the other, the two segments are perpendicular.

Finally, to prove that they bisect each other, you first need to find the point where they meet. First of all, you need to find the line the segments lie on: the formula is

y-y_0 = m(x-x_0)

where (x_0,y_0) is one of the points belonging to the line, and you already know how to find the slope. Then, you find the point of intersection, say A, by solving the system involving the two lines:

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4 0
3 years ago
7x7+1+ 16 divided by 8- (6-7)
Veseljchak [2.6K]

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6 0
3 years ago
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3 years ago
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Sloan [31]

Answer:

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Step-by-step explanation:

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8 0
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