Answer:
x = 1/15
Step-by-step explanation:
Answer:
The equation i came up with is $55= 7.8x - 47.20
The percentage of reduction is 17%
<u>Explanation:</u>
Original price = $21
Reduced price = $17.43
Percentage of reduction = ?
Difference in price = $21 - $17.43
= $3.57
Percentage of reduction = 

Therefore, percentage of reduction is 17%
Answer:
slope is undefined
Step-by-step explanation:
Using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
If x₂ - x₁ = 0
Since division by zero is undefined then the slope of the line is undefined
This applies to a vertical line parallel to the y- axis