Y = mx + b
8x - 4y - 9 = 0
first you move the nine to the other side of the equal sign (add nine to both sides)
8x - 4y = 9
then you need to also move your 8x over to the other side as well (remember we are trying to get y by itself!)
- 4y = -8x + 9
then we are going to divide -4 to both sides
and you get
y = 2x - 9/4
we can then identify the slope as 2
so B. 2 would be your answer
hope this helped
Answer:the percent decrease in the amount of water from 35gallons to 32 gallons is 8.6%
Step-by-step explanation:
The initial amount of water was 35 gallons.
Due to a leak, the amount changed to 32 gallons after 1 hour. After another hour, it decreased to 26 gallons.
The amount of water that was lost when the amount changed from 35 gallons to 32 gallons after 1 hour is
35 - 32 = 3 gallons.
Therefore, the percent decrease in the amount of water from 35 gallons to 32 gallons would be
3/35 × 100 = 8.6%
320x9.00+0.15-4 $9.15 if he adds $.15 and if he adds 15 it will decrease by four and the pizzas that he will sell by night is 316
To check if x = 9 is the solution, we need to replace every x with 9 and simplify
(3+x)/4 = 3
(3+9)/4 = 3
12/4 = 3
3 = 3
We get the same thing on both sides, so the last equation is a true equation. This means that the first equation is a true equation when x = 9. Therefore, the solution x = 9 is confirmed.
Answer:
i believe that would be -8...
Step-by-step explanation: