Answer:
5x -1
Step-by-step explanation:
(6x – 8) + (–x + 7)
Combine like terms
6x -x -8+7
5x -1
enter the following:
s
a;r
b
c
d
if you got question on how to determine these, just ask :)
Answer:
This is a reflection about the x-axis.
Step-by-step explanation:
A reflection about the x-axis has the rule
[x,y]-> [x,-y].
Therefore
M[x,y] = [x,-y}
Let M=
|a b|
|c d|
Then the matrix multiplication gives
ax+by=x.............(1)
cx+dy=-y............(2)
Solving the previous equations (1) and (2) gives
a=1, b=0
c=0, d=-1
giving M as
|1 0|
|0 -1|
