55+added=133
added=amount addeed per week times 6=6x
55+6x=133
minus 55 both sides
6x=78
divide both sides by 6
x=13
add 13 per week
y=13x+55
        
             
        
        
        
Answer:
75
Step-by-step explanation:
Four scores....  add them together and divide by four 
  (90 + 80 + 70 + 60) / 4 = 75
 
        
             
        
        
        
Step-by-step explanation:
1. x: (-12, -13) y: (12, 13)
2. x: (4 ,9) y: (-4, -9)
3. x: (-10, 8) y: (10, -8)
 
        
                    
             
        
        
        
The slope is rise over run, how many times you go up (or if down it'd be a negative) and over.
The y-intercept is what point on the y axis the line passes through
        
             
        
        
        
Answer:
They both have area 4
Step-by-step explanation:
Area of the square:

Area of the triangle:
Using the left-side of the triangle as the base, and the height from the left-side to the bottom-right corner:


We know the length of the diagonal is  as we are using a centimetre grid, so we can create an isosceles triangle with side lengths 1 and our unknown length, we can then use Pythagorean Theorem to work out our unknown side length.
 as we are using a centimetre grid, so we can create an isosceles triangle with side lengths 1 and our unknown length, we can then use Pythagorean Theorem to work out our unknown side length.



