Answer:
first option
Step-by-step explanation:
The equation representing a proportional relationship is
y = kx ← k is the constant of proportion
Here k = 0.7, thus
y = 0.7x ← is the required equation
Given
= 
( cross- multiply )
10y = 7x ( divide both sides by 10 )
y = x = 0.7 x ← the required equation
B. To see if it’s a function, it has to pass the vertical line test. That means draw a vertical line (going up and down) through any point on the graph and it can only go through one point. If it goes through more than 1, it’s not a function. Like in graph A, if you draw a vertical line at x=-2, it will go through two points, same at x=2. For graph b, no matter where you move a vertical line, it only passes through one point at a time, so it passes the vertical line test.
Answer:
-4
Step-by-step explanation:
Well, just add.
Answer:
Since Paula has her own business of making cakes for special occasions, and the total price (P) of one of Paula's cakes is represented by the equation P = 0.75S +10, where S is the number of people the cake serves, for determine what does the 0.75 represent in this situation and what does the 10 represent in this equation, the following mathematical reasoning must be carried out:
P is the price of the cake
S is the number of servings
Therefore, 0.75 is the value of each serving, which can be variable (the number of servings can vary)
In turn, 10 is the fixed cost of each cake.
