Question

The graph of 9y = 18 is a line:​

Answer 1

Step-by-step explanation:

We can simplify the equation by multiplying through by - 1

⇒

3

x

+

9

y

=

18

To find the x-intercept substitute y = 0 into the equation and solve for x

3

x

+

(

9

×

0

)

=

18

⇒

3

x

=

18

⇒

x

=

6

⇒

x

=

6

←

is the x-intercept

To find the y-intercept substitute x = 0 into the equation and solve for y

(

3

×

0

)

+

9

y

=

18

⇒

9

y

=

18

⇒

y

=

2

⇒

y

=

2

is the y-intercept

Plot the points (0 ,2) and (6 ,0), draw a straight line through them and you have the graph.

graph{-1/3x+2 [-10, 10, -5, 5]}