Solve the system of linear equations by graphing. y = –5/2 x – 7 x + 2y = 4 what is the solution to the system of linear equations?
a(–4.5, 4.25)
b(–1.7, –2.8)
c(0, –7)
d(3, 0.5)

Keywords

system; linear equations; graphing; solution

we have

-------> equation A

----> equation B

The system of linear equations is composed of equation A and equation B

Substitute the equation B in equation A

Find the value of x

The solution is the point

Using a graphing tool

see the attached figure

therefore

the answer is the option A

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !