Hi APatel :)
Here is a simple way on how to solve this problem.
We can rearrange some of the numbers and variables and find that:
The y-intercept of the first equation is 5.
The x-intercept of the first equation is 4.
The y-intercept of the second equation is 7.
The x-intercept of the second equation is 7/4.
The slope of the first equation is positive.
The slope of the second equation is negative.
Will this help you estimate?
If you need more help I'll be happy to help! :)