Write an equation of the line passing through the given points(1,3) and (-1,-9)

The Solution:

Given:

Required:

To find the equation of a line passing through the given points.

By the formula for the equation of a line:

Substitute these values in the formula.

Cross multiply to get:

Therefore, the correct answer is:

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get