Hi,

y=-2x+2  line contains points (a, 8) and (5, b)



(a, 8) and (5, b)



cross multiplying

-2(5-a) = (b-8)

-10 + 2a + 8 = b

2a - 2 = b

y=-2x+2   Using ordered pair(5,b)

b = -2*5 + 2   

Substituting for b

2a - 2 = -2*5 + 2

2a - 2 = -8

2a = -6

a = -3  and b is -8 (2*-3 - 2)

(-3, 8) and (5, -8)





 

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