name the points 
a=(x1,y1) b=(x2,y2)
a=(6,8) b=(9,10)
use the slope formula

replace

answer= The slope is equal to 2/3
a=(9,10) b=(6,8)
using the formula

slope will also be 2/3
 
        
             
        
        
        
when solving a system of equations the difference between that and elimination is the when you're using the Elimination u have to first multiply the numbers but when substituting it's different unlike the Elimination this is all ik and can u mark me brainliest?
 
        
             
        
        
        
I hope it helps you get it right
 
        
        
        
You go up 4 times and go to the left 2 times so the slope would be 4/-2
        
             
        
        
        
Answer: y=<em>300</em>-40x
The <em>y-intercept</em> would be 300
The slope would be -40
Step-by-step explanation:
x=number of months
300 is the amount she starts with
Equation can also be written like so;  y=-40x+300 just like in y=mx+b (slope intercept) form