Answer:
(4, -3)
Step-by-step explanation:
You just divide each coordinate by 3.
Answer:
20 miles for 1 gallon.
Step-by-step explanation:
20 x 15 = 300
Answer:
$2.85
Step-by-step explanation:
45.30/15.90=2.849
rounded up to the nearest hundreth would be $2.85.
I like the substitution method. Which is when you make one equation equal only x or y and plug it into the other equation)
There is also the graphing method. If you graphed it, it might not be quite as accurate (at least on hand, on computer you would be pretty exact)
Then there is the elimination method. You multiply one of the equations by a coefficient so that you can eliminate x or y from the equation.
Answer:
You find the constant of proportionality by how much u need to add or subtract the same number to get the same answer and in a graph you need to see if the line goes through the origin (0,0).
Step-by-step explanation: