Question

17. What is the slope of the line given by the equation

2x + 9y = -18?
A.-2
B.-

`(9)/(2)`
c. -

`(2)/(9)`
D.2
E.9​

Answer 1

slope = -
`(2)/(9)`

Explanation:

The equation of a line in slope- intercept form is

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

Given

2x + 9y = - 18 ( subtract 2x from both sides )

9y = - 2x - 18 ( divide all terms by 9 )

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

with slope m = -
`(2)/(9)`