Consider the following number pattern:
4 = 1 x 4
10 = 2 x 5
18 = 3 x 6
28 = 4 x 7
208 = k(k + 3)

(i) deduce the value of k.
(ii) will there be a line with 1777 on the left-hand side? Explain your answer.

i think 1: 2

step-by-step explanation:

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.

180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)