Answer:
The slope is 2 and the y-intercept is -6
Explanation:
we know that
The equation of the line in slope intercept form is equal to

where
m is unit rate or the slope of the linear equation
b is the y-intercept or initial value (value of y when the value of x is equal to zero)
In this problem we have

therefore
the slope is equal to

and

Verify
For x=0
---> is ok