FOLLOW ME FOR CLEARING YOUR NEXT DOUBT 
 
        
             
        
        
        
A.<span>(x+3)(x+4)=<span>0
x=-3,-4
B.X=5,4
hope this helps
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Answer:
24.5 unit²
Step-by-step explanation:
Area of ∆ 
 = ½ | x₁(y₂ - y₃) + x₂(y₃ - y₁) + x₃(y₁ - y₂) | 
 = ½ | (-1)(3 -(-4)) + 6(-4 -3) + (-1)(3 - 3) | 
 = ½ | -7 - 42 | 
 = ½ | - 49 | 
 = ½ (49) 
 = 24.5 unit²
 <u>Method 2:</u> 
Let the vertices are A, B and C. Using distance formula: 
AB = √(-1-6)² + (3-3)² = 7 
BC = √(-6-1)² + (-4-3)² = 7√2 
AC = √(-1-(-1))² + (4-(-3))² = 7 
Semi-perimeter = (7+7+7√2)/2 
 = (14+7√2)/2 
Using herons formula: 
Area = √s(s - a)(s - b)(s - c) 
 here,
 s = semi-perimeter = (14 + 7√2)/2
s - a = S - AB = (14+7√2)/2 - 7 = (7 + √2)/2
s - b = (14+7√2)/2 - 7√2 = (14 - 7√2)/2 
s - c = (14+7√2)/2 - 7 = (7 + √2)/2 
Hence, on solving for area using herons formula, area = 49/2 = 24.5 unit²
 
        
                    
             
        
        
        
Answer: y=5x/2 - 2.5
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-2.5-2.5)/(0-2)
m=-5/(-2)
m=5/2
y=mx+b
y=5x/2 + b
-2.5=5(0)/2 + b
-2.5=0 + b
b=-2.5
y=5x/2 - 2.5