Since you have an equation equal to both x and y, you can either substitute the equation equal to x for x or the equation equal to y for y.
x=y-1
y=4-2x
I would substitute the y in using 4-2x
x=(4-2x)-1
x=3-2x
3x=3
x=1
Then plug in x and solve for y
1=y-1
2=y
Answer:
We can make it in 36! ways.
Step-by-step explanation:
We have 36 photos and we need to arrange on a gallery wall.
So, since we need to arrange them so we will use permutation
And the number of ways arranging these 36 photos will be 36!

So, here we have n=36

Answer:
IDK MABY U
Step-by-step explanation:
Answer:
C. P'(-4,-7), Q'(-8,-7), R'(-3,3).
Step-by-step explanation:
When a shape is reflected over a line y=x, the values in the coordinates are just swapped.
P(-7,-4) becomes P'(-4,-7)
Q(-7,-8) becomes Q'(-8,-7)
R(3,-3) becomes R'(-3,3)
The answer is P'(-4,-7), Q'(-8,-7), R'(-3,3).