Determine whether the lines y = 3x + 5 and -3x - y = 9 are parallel, perpendicular or neither. Explain.

Neither

Step-by-step explanation:

Solve both equations for y or point Slope form.

y = 3x + 5 is already done.

Second equation

-3x - y = 9 add y - 9 to both sides

y = - 3x - 9

They have opposite slopes but not reciprocal and the slopes are not equal to each other so they are neither parallel or perpendicular.

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

it has to have an angle of 90 degrees