SECTION B Application of your knowledge on the nature of roots:
1.
Prove that the roots of x2 + (1 - k)x+k - 3 = 0 are real for all real values of k.
(6)​

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.

in the simple case, the two triangles point x and y are congruent because every corresponding side has the same length, and every corresponding angle has the same measure.

what are your numbers actually saying? they are spaced out.