So given x=-1, you can substitute it for x in the second equation.
-8(-1)+y=14
y+8=14
y=6
So the solution is (-1,6)
Answer:
$400
Step-by-step explanation:
Answer:
Step-by-step explanation:
we know that
To find out the unit rate divide the total miles by the total gallons
Let
x ----> the number of miles
y ----> the number of gallons
we have
substitute
What is a magic number puzzel