SOLUTION: What is the equation of the line through the R and S. R(-1,7) S(-4,9)

Algebra ->  Points-lines-and-rays -> SOLUTION: What is the equation of the line through the R and S. R(-1,7) S(-4,9)      Log On


   

Question 1029530: What is the equation of the line through the R and S. R(-1,7) S(-4,9)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the slope.
m=%289-7%29%2F%28-4-%28-1%29%29=2%2F%28-4%2B1%29=-2%2F3
Use the point slope form,
y-7=-%282%2F3%29%28x-%28-1%29%29
y-7=-%282%2F3%29%28x%2B1%29
y-7=-%282%2F3%29x-2%2F3
y=-%282%2F3%29x-2%2F3%2B21%2F3
y=-%282%2F3%29x%2B19%2F3