Answer:

Step-by-step explanation:
(7 , -1) = (x1 , y1)
(9 , -9) = (x2 , y2)
distance formula = 
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I don’t really understand I need more detail
Answer:
B
Step-by-step explanation:
The shaded area is less than the equation of the line ....it is a dashed line, so the line itelf is NOT included
the equation of the line is y = -x + 1
so the inequality is
y < -x+1
Answer:
3/7 x 8/3 = 8/7 = 1 1/7
Step-by-step explanation:
3/7 × 8/3
<u>3</u><u> </u><u>x</u><u> </u><u>8</u>
7 x 3
= 24/21
<u>2</u><u>4</u><u> </u><u>÷</u><u> </u><u>3</u>
21 ÷ 3
=8/7
= 1 1/7