It’s the 3rd one because the perpendicular slope of -1/2 would be 2/1 or just 2.
Answer: Interval notation. When using interval notation, domain and range are written as intervals of values. For f(x) = x 2, the domain in interval notation is: D: (-∞, ∞) D indicates that you are talking about the domain, and (-∞, ∞), read as negative infinity to positive infinity, is another way of saying that the domain is "all real numbers." The range of f(x) = x 2 in interval notation is: R: [0, ∞) R indicates that you are talking about the range.
Step-by-step explanation:
Answer:
you have to find the slope . there is the fomula to solve it