SOLUTION: Find the slope of each line. Then tell what the slope represents. coordinates: 4,80 12,160 would the answer be 3/80? Im confused

Algebra ->  Inequalities -> SOLUTION: Find the slope of each line. Then tell what the slope represents. coordinates: 4,80 12,160 would the answer be 3/80? Im confused      Log On


   

Question 167948: Find the slope of each line. Then tell what the slope represents.
coordinates:
4,80
12,160
would the answer be 3/80?
Im confused
Found 2 solutions by checkley77, scott8148:
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
4,80
12,160
slope=(y2-y1)/(x2-x1)=(160-80)/(12-4)=80/8=10 ans.
Y=mX+b
80=10*4+b
80=40+b
b=80-40
b=40
Y=10x+40 is this line equation.
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+50%2C+10x+%2B40%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 50, 10x +40).

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the slope is the difference in the y-values divided by the difference in the x-values

in this case __ (160-80)/(12-4)=80/8=10

the slope represents the ratio of the rates of change of y and x