Y = -3/8x + 1/2 would be the answer. You just need to plug in the numbers for y = mx + b where m is the slope and b is the y-intercept
Answer:
3.52
Step-by-step explanation:
(-1.62 + 2.4) = 0.78
5(0.78) = 3.9
7.42-3.9=3.52
Answer:
The new area will be 1/4 of the old area.
Step-by-step explanation:
If you don't know the answer already from (1/2)^2 = 1/4, you can figure it out.
new area = (1/2·5 mm)·(1/2·5 mm) = (1/2)^2·(5 mm)^2
old area = (5 mm)·(5 mm) = (5 mm)^2
Then the ratio of new area to old area is ...
((1/2)^2·(5 mm)^2)/(5 mm)^2 = (1/2)^2 = 1/4
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When any plane figure has its linear dimensions scaled by a factor of "s", its area will be scaled by a factor of s^2.
Here, s=1/2, and s^2 = 1/4, the ratio of new area to old.
(4k+2)(k-2)/(k^2-4)(2k+1)
=2(2k+1)(k-2)/ (k^2-2^2)(2k+1)
Cancel out 2k+1
2(k-2)/(k-2)(k+2) using a^2-b^2=(a-b)(a+b)
cancel out k-2
2/k+2
Therefore numerator is 2