Which set of points includes all of the solutions for y = five halves times x plus three halves? line going through negative 1 comma negative 1 and 1 comma 4

(x, five halves times x plus three halves) for all real numbers
(−1, −1), (0, 1.5), (1, 4)
(x, y) for all real numbers
(−3, −6), (−2, −3.5), (0, 1.5), (2, 6.5), (3, 9)

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.

Ke’ajah has a coupon for 1/3 off the regular price, t, of a tent. which expression represents the price of the tent using the coupon? select the two correct expressions. a. 1/3t b. 2/3t c. t - 1/3 d. t - 2/3 e. t - 1/3t f. t - 2/3t

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.