Add both the equations together to eliminate x
x+5y=8
-x+2y=-1
7y=7
y=1
Now fill in y into the original equation
x+5(1)=8
x+5=8
x=3
Now you can check by filling x and y into the second equation.
-(3)+2(1)=-1
-3+2=-1
-1=-1
So your answer will be (3, 1)
Brainliest my answer if it helps you out?
Answer:
y = 16 
Step-by-step explanation:
Use the given points to find the values of a and b
Using (0, 16), then
16 = a
(
= 1 ), thus
a = 16
y = 16 
Using (2, 400), then
400 = 16b² ( divide both sides by 16 )
b² = 25 ( take the square root of both sides )
b =
= 5
Thus
y = 16 ×
← exponential function