Determine whether the following relation is a function.
{(3,7), (3,8), (3,-2), (3.,1)}
a) it is a function because the ordered pairs all have the same x-value.
b) it is not a function because there are multiple y-values paired with a single x-value.
c) it is a function because none of the ordered pairs have the same y-value.
d) it is not a function because none of the ordered pairs have the same y-value.

30 in the diagram line e and made parallel to each other and line p and q are transversal. use properties of special angles formed by parallel lines and their transversals to find the missing angle measures. m< 3=65 m< 15=120 m< 7= m< 4= m< 6= m< 1= m< 16= m< 18= m< 21= m< 10= m< 11= m< 12=

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.