Topic 5 Review of Systems -- Questino 12

Question

Find the solution to the system of equations by substitution.

p=q+4
2p+4q=

Answer 1

something is missing from the right side of the 2nd equation 2p+4q = ??

p=q+4

let's fill in the right side, such as 2p+4q = 8

then divide by 2 to get

p+2q = 4

q+4+2q = 4

3q = 0

q = 0/3 = 0

p = 4

(p,q) = (4,0)