Answer:
y = -1/4x - 2
Step-by-step explanation:
Since the line has to be perpendicular, that means the new slope multiplied by the original should be -1. The original slope is 4, so the new one would be -1/4. Now our equation is y = -1/4x + z, z being the y intercept. We can find this by substituting the point in and finding the match. 1= -1/4(-12) + z. z has to equal -2, so the answer is y = -1/4x - 2
Answer:
2 radical 13
Step-by-step explanation:
Answer:
$40
Step-by-step explanation:
Let the original price of the item be x.
From the first statement, the price of the item was reduced 25% to $30. This means that new price of the item is now 75% (0.75) of the original price(x), and this new price is equal to $30. i.e
0.75x = 30
Now, let's solve for x.
0.75x = 30 [divide both sides by 0.75]
= ![\frac{30}{0.75}](https://tex.z-dn.net/?f=%5Cfrac%7B30%7D%7B0.75%7D)
x = 40.
Therefore, the original price of the item was $40