The value of x is -3, or x= -3
When x=1, 7x+3 = 10.
When x=2, 7x+3 = 17.
When the value of 'x' changes from '1' to '2', the value of 7x+3 changes
from '10' to '17' . . . a distance of '7' .
That's what the ' 7x ' in the equation means, and that's what we mean
when we say that the 'slope' of the equation is '7'. 'y' changes '7' for
every '1' that 'x' changes.
Answer: The sensor will read 300 liters after 5 minutes.
The sensor sensor should have read 120 liters at time -7 minutes.
Step-by-step explanation:
Given: The amount of water detected by sensor initially= 225 litres
Since, the hose fills the aquarium at a constant rate of 15 liters per minute.
Let x be the time , and y be reading of sensor then

Therefore, the sensor reads after 5 minutes (put x=5 in the equation)= 
To find the sensor read at time -7 minutes put x=-7 in the equation, we get

Hence, the sensor should have read 120 liters at time -7 minutes.
Answer: 6 months
Step-by-step explanation:
if the camera was 150 dollars, and she pay 60 upfront,
150-60=90 dollars left to be paid
she pays 15 dollars a month
90/15=6 months
Answer:
slope = (-2 +3) / (12 -3)
= 1/9