Answer:
k is the y-coordinate of the vertex of the function. That vertex is located at (1, -2.5).
The value of k is ...
... A. k = -2.5
i think... ;-;
The constant of proportionality of the given graph is gotten as 4.
<h3>How to find the constant of proportionality?</h3>
The constant of proportionality here is simply the slope of the graph.
Now, we will take two points and use their coordinates to find the slope from the formula;
m = (y2 - y1)/(x2 - x1)
Let us pick 2 points which are;
(1, 4) and (2, 8). Thus;
m = (8 - 4)/(2 - 1)
m = 4/1
m = 4
Thus, the constant of proportionality of the graph is gotten as 4.
Read more about constant of proportionality at; brainly.com/question/1835116
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Answer:
The point is (15,10)
Step-by-step explanation:
Given data:
cost of card $50
x card sold for $2
y card sold for $1.50
from the above information given above we have following relation
2x + 1.50y = 50
the above equation is linear, therefore to find the point to point out the number of card sold, hit and try method should be used. select the proper point (x, y) so that after putting in above equation there result must not be greater than 50
Try for (15,10)


Answer:
Step-by-step explanation:
f(2) = 2^3 - 4(2)^2 = 8 - 4(4) = 8 - 16 = -8
g(-8)= 4(-8) + 5 = -32 + 5 = -27
C is the answer