When you've got a squares bracket, this simply becomes the bracket twice, therefore, (r+s)2 becomes (r+s)(r+s)
You've then go to use FOIL, and this gives you r^2+rs+sr+s^2, and this cannot be simplified any further.
Therefore, the product of this is r^2 + s^2 + rs + sr
Hope this is what you're looking for :)
A) I included a graph, look below.
B)
Input the y in x = y + 3.
x = (-4x - 3) + 3
x = -4x + 0
Add 4x to both sides.
5x = 0
Divide both sides by 5.
x = 0
Input that x value in y = -4x - 3
y = -4(0) - 3
y = 0 - 3
y = -3
(0, -3)
C)
Convert both equations to Standard Form.
x = y + 3
Subtract y from both sides.
x - y = 3
y = -4x - 3
Add 4x to both sides.
4x + y = -3
Add the equations together.
4x + y = -3
x - y = 3
equals
5x = 0
Divide both sides by 5.
x = 0
Input that into one of the original equations.
0 = y + 3
Subtract 3 from both sides.
-3 = y
(0, -3)
C Because the other answers 2 or1 pound that's more than the amount in the question asks for
Answer:
y = 5x+3
Step-by-step explanation:
To find the slope, we need to points
(1,8) and (2,13)
Slope is given by
m = (y2-y1)/(x2-x1)
= (13-8)/(2-1)
= 5/1
The slope is 5
We can use the point slope form for an equation
y-y1 = m(x-x1)
y-8 = 5(x-1)
Distribute the 5
y-8 = 5x-5
Add 8 to each side
y-8+8 = 5x-5+8
y = 5x+3
This is in slope intercept form