7. D
8. D
9. D
10.C
for 7 & 8 you use the equation

your points are (3,8) & (9,5)
so you plug the numbers in
y2= 5
y1=8
x2=9
x1=3
you subtract them get a fraction and that is your slope
9 & 10
use the equation

plug you numbers in for y1 and x2 m is your slope plug it in and that is your equation
Answer:
the answer is that both x and y are acute
Step-by-step explanation:

Is the first one, not periodic
Answer:
7) 8.94
8) 6.71
Step-by-step explanation:
for both questions, use pythagorean theorem

<u>Question 7:</u>

16 + 64 =
80 =

c = 8.94
<u>Question 8:</u>

36 + 9 = 
45 = 

c = 6.71