To answer this (specifically the first one) you have to count how many spaces each point moves. (How many spaces up/down does it go? Left/right?) then you put rise (up/down) over run (left/right) and you should get the slope!
8: slope is 1/2 and y intercept is 0
9: slope is 7/4 and y-intercept is 0
Answer:

Step-by-step explanation:

Taking square root both sides, we get

Therefore, the values of
are:

In the figure, we can consider that the base is the side that mesures 12 in and that the height is the side that measures 15 in, since that sides are perpendicular. So, we just need to use the given formula:

Hence, the area of the triangle is 90 in² (B).
Answer:
3*r = 3
Step-by-step explanation:
6 is a solution.

6 is not a solution.

6 is a solution