Question

What is the y-intercept of the line 6x – 9y = 18?

(0, -2)

(0, 3)

(3, 0)

(-2, 0)

Answer 1

(0, -2)

Explanation:

What is the y-intercept of the line 6x – 9y = 18?

(0, -2)

(0, 3)

(3, 0)

(-2, 0)

You need to solve for y:

6x – 9y = 18

6x – 9y - 6x = 18 - 6x

– 9y = 18 - 6x

– 9y/-9 = 18/-9 - 6x/-9

y = - 2 + 2/3x

or:

y = 2/3x - 2

y-intercept is: (0 , -2)

Answer 2

(0, - 2 )

Explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

given

6x - 9y = 18 ( subtract 6 from both sides )

- 9y = - 6x + 18 ( divide through by - 9 )

y =
`(2)/(3)` x - 2 ← in slope- intercept form

with y- intercept c = - 2 , that is (0, - 2 ) in coordinate form