Reflection of one triangle along y-axis is shown as:

If the input vertices are (-2,2), (-2,-1) and (0,-1), then the output vertices will be .

(2,2),(2,-1),(0,-1)

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(2,2),(2,1),(1,-1)

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(2,2),(-2,1),(1,-1)

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(-2,2),(2,1),(0,-1)

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Solution

The correct option is A (2,2),(2,-1),(0,-1)
The transformation that has been observed is reflection along y-axis.

So, the observations will be:
x-coordinates: x = -x
y-coordinates: y = y

Input coordinates Output coordinates

X(-2,2) X'(2,2)

Y(-2,-1) Y'(2,-1)

Z(0,-1) Z'(0,-1)

The final blue print for the frame will be:

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Similar questions

What is the area of the triangle if one of the vertices of the triangle is (0, 0) and the other two vertices are (2 , 2) and reflection of point (2 , 2) on Y-axis?

Q. Question 79(i)

Consider this input/output table.

\begin{matrix} I n p u t & 1 & 2 & 4 & 5 & 7 O u t p u t & 2 & 5 & 11 & 14 & 20 \end{matrix}

Graph the values from the table by taking input along horizontal axis from 0 to 8 and output along vertical axis from 0 to 24.

Q. Use graph paper for the question (Take

2

=

1

unit along both x and y axis). ABCD is a quadrilateral whose vertices are

A (2, 2), B (2, - 2), C (0, - 1)

and

D (0, 1)

. Reflect quadrilateral ABCD on the y-axis and name it as A'B'CD.

Q. Question 79(i)

Consider this input/output table.

\begin{matrix} I n p u t & 1 & 2 & 4 & 5 & 7 O u t p u t & 2 & 5 & 11 & 14 & 20 \end{matrix}

Graph the values from the table by taking input along horizontal axis from 0 to 8 and output along vertical axis from 0 to 24.

If the vertices of a triangle be (a, 1), (b, 3) and (4, c), then the centroid of the triangle will lie on x-axis, if

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Input coordinates	Output coordinates
X(-2,2)	X'(2,2)
Y(-2,-1)	Y'(2,-1)
Z(0,-1)	Z'(0,-1)

Reflection of one triangle along y-axis is shown as: If the input vertices are (-2,2), (-2,-1) and (0,-1), then the output vertices will be .

Reflection of one triangle along y-axis is shown as:

If the input vertices are (-2,2), (-2,-1) and (0,-1), then the output vertices will be .