First you have to find the slope with the equation y2 - y1 / x2 - x1 , then once you have found the slope (slope = -2) you simply plug it into the point slope formula. y-0 = -2(x-5) solving it algebraically you should arrive at Y=-2x+10. (the 5 and 0 were plugged in are two of the X and Y points of the line which is why we plugged them into the X and Y values of the equation)
Answer: The geometric mean of 125 and 5 is 25
2y = 5 hope this helps :)
X+46.9=61.5
-46.9 -46.9
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x=14.6
The answer to your question is 0