Respuesta :

apologiabiology
y=mx+b
m=slope
b= y intercept

given
slope=5=m

y=5x+b
use the point giveen
(1,2)
x=1 and y=2 is a soltion
subsitute and find b

2=5(1)+b
2=5+b
minus 5
-3=b

y=5x-3 is equation

B is answer

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