Answer:
y=1/2x+5
Step-by-step explanation:
y-y/x-x for slope
4-3/-2-(-4) 1/2
Slope is 2
Y intercept is 4
5x+20+16
the expression is 5x+36
Answer:C. 2/3 cm/s
Step-by-step explanation:
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Answer: Choice D. 
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This is because we want to avoid having negative numbers under the square root. So we make the radicand to be 0 or larger.
The +1 at the end doesn't affect the domain.