SOLUTION: if the slope is 7 what is the coordinate of (x,8)and(4,1)

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Question 263529: if the slope is 7 what is the coordinate of (x,8)and(4,1)
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(x,8)and(4,1)
slope=(y2-y1)/(x2-x1)
7=(1-8)/(4-x)
7=-7/(4-x)
7(4-x)=-7
28-7x=-7
-7x=-7-28
-7x=-35
x=-35/-7
x=-5
ans. (-5,8)& (4,1)
y=7x+b
8=7*-5+b
8=-35+b
b=8+35
b=43
y=-5x+43 is the line equation.
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+45%2C+-5x+%2B43%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 45, -5x +43).