Answer:

Step-by-step explanation:
Given


Required
Determine the percentage change
This is calculated as:








Answer:
110
Step-by-step explanation:
Substitute x = 4 and y = 7
20 + 2 (3y - 4x)
= 20 + 2 [(3 x 7) - (4 x 4)]
= 20 + 2 (21 - 16)
= 20 + 2 (5)
= 22 (5)
= 110
Answer:
The equation of the graphed line written in standard form is:x-y=0
Step-by-step explanation:
we know that for graphing lines the equation of a line must be in standard form.
the standard form of a line is given by
where a,b,c are some real numbers.
hence, in the given question for graphing our line we must use the equation
because on comparing it to the general equation of the line
we have here a=1, b=-1 and c=0.
therefore the standard form is: 
Answer:

Step-by-step explanation:
Given

Transformation: 180 degrees clockwise around the origin
Required
Determine the new coordinates Z'
<em>When a point (x,y) is rotated 180 degrees clockwise around the origin, the new point is: (-x,-y)</em>
<em></em>
So:

Then:

Answer:
470?
Step-by-step explanation:
I am not fully sure of the answer