2x+y=8 x+y=4 Where do they intersect at?
1 answer:
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Answer:
Option (B) is correct .
The constant of proportionality is 7.5 .
Reason
Let us assume that the number of books be x.
Let us assume that the cost of books be y .
Than
y = kx
Where k is constant of proportionality .
As given
Number of Books 4 6 8
Cost ($) 30 45 60
Thus
when x = 4 , y = 30
Put in the equation y = kx .
k = 7.5
when x = 6 , y = 45
Put in the equation y = kx .
k = 7.5
when x = 8 , y = 60
Put in the equation y = kx .
k = 7.5
Therefore the constant of proportionality is 7.5 i.e option (B) is correct .
The type of quadrilateral shown is called A kite. The symbols on the sides tell us that two pairs of adjacent sides are equal.
<h3>How to Identify a Quadrilateral?</h3>A quadrilateral is defined as a closed shape and a type of polygon that has four sides, four vertices and four angles.
Now, from the attached quadrilateral shown, we can say that it is called a Kite. This is because a kite is a quadrilateral that has 2 pairs of equal-length sides and these sides are adjacent to each other.
Read more about Quadrilaterals at; brainly.com/question/16941531
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