Posted by Anonymous on .
use substitution to solve the system 2xy=4 3x+y=9

Algebra 1 Math 
Jennifer,
2x  y = 4
3x + y = 9
From the first equation:
y = 2x + 4
Substitute this into the second equation:
3x + 2x + 4 = 9
x + 4 = 9
x = 13
x = 13
Then plug this answer back into the first equation
2*13  y = 4
26  y = 4
y = 30
y = 30