Take the coordinates on each line and find their related slopes:
Slope formula m= (y₂-y₁)/(x₂-x₁)
1st . The two given coordinates of the LOWER line are: (-1,-1) and (1,-2)
them m = (-2+1)/1+1) = -2/2 = -1
2nd. The two given coordinates of the HIGHER line are: (-1,2) and (1,1)
them m = (1-2)/(1+1) = -1/2
3rd. The two given coordinates of the SECANTE are: (1,0) and (2,2)
them m = (2-0)/(2-1) = 2/1 = 1
We notice that the 1st line has m = -1 and the 3rd (secant), m = 1, then only the 1st line and the secant are perpendicular because the product of their slope is equal - 1 (this is the condition to have perpendicular lines)
Answer:
its 1/4 :)
Step-by-step explanation:
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Excuse me but his answer is incorrect. To find the proper rate of change you might have to solve it like you would for slope.
First you would find the points for x = 3 and x = 15 would be (3, 0.08) and (15, 327.68). Then using the slope formula you can find 327.60/ 12. That gives 27.3. So in that case the correct answer is C.
Okay let's see.. 0.750
1.200
As we see 1 is bigger than 0.So that means 1/2 is bigger.Hope this helps! (;
