Answer:
3.5, -4
Step-by-step explanation:
midpoint formula
(x1 + x2)/2 and (y1 + y2)/2
-1 + 8/2 = 7/2 = 3.5
-8 + 0/2 = -4
Answer:
k = 7
Step-by-step explanation:
given y varies jointly with x and w then the equation relating them is
y = kxw ← k is the constant of variation
to find k use the condition when y = - 42, x = 2 and w = - 3 , then
- 42 = k × 2 × - 3
- 42 = - 6k ( divide both sides by - 6 )
7 = k
constant of variation is k = 7
If jenn has 13 fewer marbles than marty and we know she has 20 marbles, you would add 13 to 20 (33) to find how many marbles marty has. the equation would be 13+20=33 (or any variable depending on the context of the question.)
Answer:
y=-7x+9
Step-by-step explanation:
Answer:
-8.635
Step-by-step explanation:
I used trigonometric identification