12 3 4 5 6 7 8 9 10 time remaining 46: 34 what is the rule for the reflection? ry=x(x, y) → (–y, –x) ry=–x(x, y) → (–y, –x) ry=x(x, y) → (y, x) ry=–x(x, y) → (y, x

Solution:

Keep in mind:

When a point (a,b) is reflected across a line , y=x the coordinate of new point after reflection becomes (b,a).

Also , when  point (a,b) is reflected across a line , y= -x the coordinate of new point after reflection becomes (-b,-a).

So, option (B)  r ,(Line, y=–x),Preimage → (x, y) → (–y, –x)→image,  and Option (C) r (Line, y=x),Preimage→ (,x, y) → (y, x) →Image, are true options describing the rule of reflection across  lines, y=x,and  y= -x.

The answer is B. Just took the test.

Step-by-step explanation:

answer: 12,000

step-by-step explanation: first you ar e supposed to add. then multiply then subtract

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15