Let's see what to do buddy...
_________________________________
We have following equation for finding the slope of the lines using two points :

Where a and b are the points which the line through them.
_________________________________
A = ( 8 , 9 )
B = ( -2 , 4 )
Now just put the coordinates in the above equation :

_________________________________
A)
The answer is :

_________________________________
B)
First we must choose one of the A or B points.
I choose : B = ( -2 , 4 )
We need using the following equation:


It's the point-slope form of the line..
_________________________________
C)
We just need to simplifies the above equation to find the slope-intercept form.
Look :


Both sides plus 4


It's the slope-intercept form of the line.
_________________________________
And we're done.
Thanks for watching buddy good luck.
♥️♥️♥️♥️♥️