SOLUTION: Write and equation of the line passing through the given points: (1,-5) and (-2,-20) Please help me solve this question giving a step by step process. Thanks

Question 186214: Write and equation of the line passing through the given points:
(1,-5) and (-2,-20)
Please help me solve this question giving a step by step process.
Thanks
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
(1,-5) and (-2,-20)
slope=(y2-y1)/(x2-x1)
slope=(-20+5)/(-2-1)
slope=-15/-3
slope=5 ans.
Y=mX+b
-5=5*1+b
-5=5+b
b=-5-5
b=-10 ans. for the y intercept.
y=5x-10
(graph 300x200 pixels, x from -6 to 5, y from -20 to 10, 5x -10).
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