Which ordered pair is the vertex of y = |x - 3| + 2 ? a. (3, 2) b. (2, 3) c. (–3, 2) d. (2, –3)
The time between seeing the lightning and hearing the thunder is s seconds. The distance d you are from lightning is approximately equal to one-fifth of s seconds. Which direct variation equation represents this situation? a. d = 5s b. s = 1/5d c. s = 5d d. d = 1/5s
1) When you graph the equation you get a graph where the vertex is at (3,2) (letter a)
The number after the absolute value is the shift vertically, and within the absolute value is a shift horizontally. The shift horizontally is always opposite of the number's sign, so in this case it is shift right 3 and up 2.
2) Since the distance is 1/5 seconds then d = 1/5s (answer d)
3) y = absolute value of x-2 (which is letter a).
I hope this helps!
May 11th, 2015
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