Question

If a line crosses the y-axis at (0, 1) and has a slope of 4/5, what is the equation of the line?

A. 4y - 5x = 5
B. Y - 4x = 5
C. 5y - 4x = 5

Answer 1

y = mx + b

m = 4/5,

the point (0, 1) is the y-intercept, so b = 1


so,
y = (4/5)x + 1

Answer 2

\[\frac{ 4 }{ 5 }=\frac{ y-1 }{ x-0 }\]
cross multiply
\[4(x-0)=5(y-1)\]
\[4x=5y-5\]
\[5y=4x+5\]
or
\[4x-5y=5\]

Answer 3

sorry it is suposed to be
5y-4x=5