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m = -a/b = -5/3
pers garis dgn m = -5/3 melalui titik (5,3) adalah
y-y₁ = m(x-x₁)
y-3 = -5/3(x-5) --> kedua ruas dikali 3
3y-9 = -5(x-5)
3y-9 = -5x+25
5x+3y = 25+9
5x+3y = 34
semoga membantu ya :)