Question

if (2,p) and (q,-1) are the two ordered pairs of the members of (x,y) such that 2x+y=7 , find the value of p and q .
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Answer 1

Answer:

Step-by-step explanation:

take the first set and substitute in the equations

2(2) + p = 7

p=3

now for the second

2(q) -1 = 7

2q = 8

q=4

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Answer 2

Answer:

Given

(2, p) and (q, -1)

x=2,let's put in the equation 2x+y=7

2×2+y=7

4+y=7

y=7-4=3

p=3

from (q, -1), put y=-1 I'm the given equation.

2x+y=7

2x-1=7

2x=7+1

x=8/2=4

q=4