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Math·Algebra·Linear equations in two variables

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Line $j$ is defined by $4x+5y=25$. Line $k$ is parallel to line $j$ in the $xy$-plane. An equation of line $k$ is $16x+ry=15$, where $r$ is a constant. If line $k$ passes through the point $(0,b)$, what is the value of $b$?

1

3/4

2

0.75

3

.75