Question 262430: I need help finding the equation for the line.
(8,5) and m=5
Thanks
Answer by checkley77(12844)   (Show Source):
You can put this solution on YOUR website! (8,5) and m=5
Y=mX+b This is the line formula where m=the slope & (8,5) are the (X,Y)coordinates of one point.
You need to replace (m) with 5, (Y) with 5 & (X) with 8 & solve for (b) which is the Y intercept.
Y=mX+b
5=5*8+b
5=40+b
b=5-40
b=-35 this is the Y intercept (0,-35).
Y=5X-35
To find the X intercept set y=0 & solve for X.
0=5X-35
5X=35
X=35/5
X=7 this is the X intercept (7,0)
 (graph 300x200 pixels, x from -6 to 10, y from -40 to 10, 5X -35).
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