What is the equation of the line that passes through (44.2, -22.8) and (25.2, 34.2)?

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Answer 1 · 2018-03-02T10:18:54

#y+3x=109.8#

#=>y=mx+b#

#=>y=(y_2 -y_1)/(x_2-x_1)*x+b#

#=>y=(34.2-(-22.8))/(25.2-44.2)*x+b#

#=>y=(34.2+22.8)/(-19)*x+b#

#=>y=57/(-19)*x+b#

#=>y=-3x+b#

#=>y+3x=b#

Put coordinates of any of the two points.

#=>-22.8+3*(44.2)=b#

#=>-22.8+132.6=b#

#=>109.8=b#

So, the equation is
#y+3x=109.8#