A.) y= 5x + 4 B.) y= -x + 8 C.) y= x - 10 D.) y= -4x + 3

Mathematics

2 answers:

creativ13 [48]3 years ago

3 0

Option B is your answer.

If you plug it in, you get:

1 = -(7) + 8
1 = - 7 + 8
1 = 1, a true statement.

Soloha48 [4]3 years ago

3 0

Try the x and y values in the equations and see which works.
A.) 1 = 5*7 +4 . . . . nope
B.) 1 = -7 +8 . . . . . true
C.) 1 = 7 -10 . . . . . nope
D.) 1 = -4*7 +3 . . . nope

The appropriate choice is ...
B.) y = -x +8

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HELP ASAP!! Identify the matrix transformation of ΔPQR, which has coordinates P(−5, −2),Q(−6, −3), and R(−2, −3), for reflection

podryga [215]

Answer:

Matrix transformation = $\left[\begin{array}{ccc}-1&0\\0&1\end{array}\right]$

Vertices of the new image: P'= (5,-2), Q'= (6,-3), R'= (2,-3)

Step-by-step explanation:

Transformation by reflection will produce a new congruent object in different coordinate. Reflection to y-axis made by multiplying the x coordinate with -1 and keep the y coordinate unchanged. The matrix transformation for reflection across y-axis should be: $\left[\begin{array}{ccc}-1&0\\0&1\end{array}\right]$ .

To find the coordinate of the vertices after transformation, you have to multiply the vertices with the matrix. The calculation of the each vertice will be:

P'= $\left[\begin{array}{ccc}-1&0\\0&1\end{array}\right]$ $\left[\begin{array}{ccc}-5\\-2\end{array}\right]$ = (5,-2)