Pick 2 points on ur line and use the slope formula : (y2 - y1) / (x2 - x1)
(y2 - y1) / (x2 - x1)
(-9,0)....x1 = -9 and y1 = 0
(0,6).... x2 = 0 and y2 = 6
now sub
slope = (6 - 0) / (0 - (-9) = 6/(0 + 9) = 6 / 9 = 2/3 <==
ur y intercept is where ur line crosses the y axis...and that would be (0,6)....or just 6 <==
        
             
        
        
        
Multiply first equaton by -1 and add to first
-2x+y=7
<u>4x-y=-4 +</u>
2x+0y=3
2x=3
divide 2
x=3/2
sub
2x-y=-7
2(3/2)-y=-7
3-y=-7
minus 3
-y=-10
negative 1 times both sides
y=10
(3/2,10)
(1.5,10)
B is ansre 
        
             
        
        
        
Answer:
18ft
Step-by-step explanation:
so fine area you do side x side and divide by two
6 x 6= 36
36/2 = 18
 
        
             
        
        
        
Answer:
648
Step-by-step explanation:
I believe the formula is 4 * 3 * 9 * 6
 
        
             
        
        
        
Answer:
10 divided by 12 equals 0.833333333