The midpoint

The midpoint of (2, 5) and (8, y) is (5, -1). Find the line equation in slope-intercept form.

Result

y =  -7
f = (Correct answer is: -2x+9) Wrong answer

Step-by-step explanation:

y=f(x)=k x+q mx=2+82=5 my=5+y2=1  5+y=(1) 2  y=7=7
5=k 2+q y=k 8+q 5=k 2+q (7)=k 8+q  2k+q=5 8k+q=7  k=2 q=9  f(x)=k x+q f=2x+9



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