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anonymous · Answer

attachment

phi · Answer

find the equation of a line through 2 points (3,9) and (12,6)

anonymous · Answer

is it d

anonymous · Answer

If you know your types of formulae, they should allow you to solve this problem. We begin by establishing that x is the time, and that y is our height. Thus, using point-slope $$(y-y_0)=m(x-x_0)$$Plugging in values for the slope, we receive:$$3-12=m(9-6)$$ So $$-9=3m$$which means that$$m=-3$$Putting this back into the equation:$$y-9=-3(x-3)$$Which is$$y=-3x+18$$

phi · Answer

Lol, you confused x and y.  Check your equation against 12 minutes and 6 inches

anonymous · Answer

i took a picture of the equation

phi · Answer

girl, do you know how to find the equation of line through 2 points?

anonymous · Answer

no

phi · Answer

do you know how to find the slope?  (change in y divided by change in x)

anonymous · Answer

kind of

phi · Answer

First, you need the 2 points.  They tell you x minutes (so that leaves y as the height)
so write down 2 (x,y) pairs  where x is the minutes and y is the height in inches.