The slope of the line that passes throught (x1,y1) and (x2,y2) is (y2-y1)/(x2-x1)
given
(-4,3) and (-8,6)
slop=(6-3)/(-8-(-4))=(3)/(-8+4)=3/-4=-3/4
slope is -3/4
        
                    
             
        
        
        
-30-6r=36
We move all terms to the left:
-30-6r-(36)=0
We add all the numbers together, and all the variables
-6r-66=0
We move all terms containing r to the left, all other terms to the right
-6r=66
r=66/-6
r=-11
 
        
                    
             
        
        
        
Answer:
x = 2.25 y = 0.75 
Step-by-step explanation:
2x = 9.5- 5 
2x = 4.5 
x = 4.5 ÷ 2 
x = 2.25 
know we now what is x so in the second one we evaluate x 
3(2.25) + 5y = 10.5 
6.75 + 5y = 10.5 
5y = 10.5- 6.75 
5y = 3.75 
y = 3.75 ÷ 5 
y = 0.75 
that's it ! 
if you want to check your answer you can evaluate x and y so it will be like 
2×2.25 + 5 
= 4.5 + 5 = 9.5
and
3× 2.25 +5×0.75 
= 6.75 + 3.75 = 10.5 
 
        
             
        
        
        
Answer:
   0.012t + 28 = 30
Step-by-step explanation:
The depth starts at 28 meters. The amount of increase in t minutes will be 0.012t, so the total depth after t minutes is ...
   0.012t +28
We want to find when that is equal to 30, so the appropriate equation is ...
   0.012t +28 = 30