Question

Find 3
solutions of 3x - 9y = 27. Plot on graph.​

Answer 1

Step-by-step explanation:

3x - 9y = 27

3x = 27 + 9y

$x = \frac{27 + 9y}{3}$

let y = 0

$x = \frac{27 + 9(0)}{3}$

$x = \frac{27 + 0}{3}$

$x = \frac{27}{3} = 9$

x = 9 , y = 0 (1)

let y = -1

$x = \frac{27 + 9( - 1)}{3}$

$x = \frac{27 - 9}{3}$

$x = \frac{18}{3} = 6$

x = 6 , y = -1 (2)

let y = -2

$x = \frac{27 + 9( - 2)}{3}$

$x = \frac{27 - 18}{3}$

$x = \frac{9}{3} = 3$

x = 3 , y = -2 (3)