Question

Solve the equation for y.

4x – 5y = 9










A. y=4/5x-9/5

B. y=-4x-9

C. y=5/4x+9/4

D. y=-5/4x-5/9

Answer 1

\[4x-5y = 9\]
\[4x - 5y + 5y = 9 + 5y\]
\[4x = 9 + 5y\]
\[4x - 9 = 9 + 5y - 9\]
\[4x-9 = 5y\]
\[\frac{4x-9}{5} = \frac{5y}{5} = y\]
\[y = \frac{4}{5} x - \frac{9}{5}\]