Question
The cost of 5 pizzas is $20, the slope of the equation is
- 5
- 100
- 4
Hint:
Constant of proportionality is the same as the slope of a straight line passing through the origin. Using the formula m=
we can find the value of slope or constant of proportionality. Here, we have to find the slope of the given linear equation using the given information in the question.
The correct answer is: 4
In the question it is given that the cost of 5 pizzas is $20.
We have to find the slope of the equation.
Here, x= number of pizzas and y= price of pizzas.
So, x= 5 and y= 20
Slope= m= ....................(1)
Put the value of x and y in eq. 1.
m= 
Thus, the slope of the equation is 4.
Therefore, the correct option is c, i.e., 4.
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