We can use substitution.
We can substitute 2x + 3 for 'y' in the 2nd equation.
y = 3x + 5
2x + 3 = 3x + 5
Subtract 3 to both sides:
2x = 3x + 2
Subtract 3x to both sides:
-x = 2
Multiply -1 to both sides:
x = -2
Now we can plug this into any of the two equations to get our y-value:
y = 2x + 3
y = 2(-2) + 3
y = -4 + 3
y = -1
So our solution is (-2, -1)
To find the increase from 1997 to 1998, you could substitute in numbers and then determine the percent increase based on those numbers.
Ex: 500 to 1000 (96-97)
1000 to 2000 (97-98)
Percent increase is (2000-1000)/1000 or 100% increase.
Testing another set of numbers will result in the same thing.
Ex: 200 to 400 (96-97)
400 to 800 (97-98)
Percent increase is (800-400)400 or 100% increase.
The percent increase is 100%.
Answer:
1/4
Step-by-step explanation:
y=1/4x
or
y=1.4x+2
15 percent because you move the decimal to the right two points to find the percent
