Vertical lines have undefined slope. They are not y=mx+b equations, but simply x= equations.
This line passes through the point (-1,12) has an x-value of -1. Therefore the equation of the line is simply x=-1
6x-18
you pretty much h just multiply both the first part of the parentheses by the number outside, then the second :)
Answer: 
Step-by-step explanation:
Given : The total number of cards in a deck = 52
Number of red cards = 26
There are two types of red cards : diamond and heart.
Number of diamond cards = 13
The probability that the first card is a diamond :-

Since diamond is also a red card.
Now, the total cards left = 51
The number of red cards left = 12
The probability that the second card is a red card (without repetition) is given by :-

Now, the probability of choosing a red card for the second card drawn, if the first card, drawn without replacement, was a diamond :-

(-2,3) (3,0)
find slope
m= 0-3/(3+2) = -3/5
point slope is y-y1=m (x-x1)
point is (3,0) and m=-3/5
plug and chug
y-0=-3/5(x-3)
y=-3/5x+9/5
hope that helps
Answer: The machine would now be $1020
Step-by-step explanation: Multiply $1,275 by 0.8 because 0.8 is 20% off, then you get your answer.