Answer:
line a and b are parallel
line c is not perpendicular because it is not 3
step-by-step explanation:
if the slope is the same it is parallel
if the slope is the complete opposite it is perpendicular 
lines a and b are parallel with a slope of -1/3
(0, 5) (3, 4)
m = 4 - 5 / 3 - 0
m = -1 / 3
m = -1/3
(-1, 1) (2, 0)
m = 0 - 1 / 2 + 1
m = -1 / 3
m = -1/3
line c is perpendicular to lines a and b the slope is 
(0, 0) (2, 5)
m = 5 - 0 / 2 - 0
m = 5/2
2.5
        
             
        
        
        
Answer:
80/89
Step-by-step explanation:
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Both 15 and 20 can be divided evenly by 5, so 5 is the greatest common monomial:  5(3x^2 + 4x)  or  5x(3x + 4) 
        
             
        
        
        
A+b = 5 
b+c= 3 1/2
2 times 2 + 3 = 7
a times d =8
c+c = 1
(e)2 = 1/9