Answer:
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form 
or 
Let
x -----> the amount of weight
y ----- the amount a spring will stretch
we know that
For x=80 lb, y=2.1 in
<em>Find the value of k (constant of proportionality)</em>
substitute the values
The linear equation is
How far will it stretch when 40 pounds is attached?
For x=40 lb
substitute the value of x in the linear equation and solve for y
Answer:
5 feet
Step-by-step explanation:
Answer: B
Step-by-step explanation: Jacob doesn't know either colleges' actual price. Bayside could still be equal to or more expensive than Lakeshore.
Answer:
Expression
Step-by-step explanation:
<span>The answer is B. (2, 2).
The midpoint (M) of two points (x1, y1) and (x2, y2) is:
M = ((x1 + x2)/2, (y1 + y2)/2).
We know that the points of CD are C(-4, 8) and D(8, -4). So we have:
x1 = -4, y1 = 8, x2 = 8, y2 = -4.
Now when we have all we need, let's calculate the midpoint M.
M = ((x1 + x2)/2, (y1 + y2)/2);
M = (((-4) + 8)/2, (8 + (-4))/2);
M = ((8 - 4)/2, (8 - 4)/2);
M = (4/2, 4/2); M = (2, 2).
Therefore, the midpoint of CD is (2, 2).</span>
