Question

If the ordered pairs (a,-1) and (5,b) belongs to {(x,y)|y=2x+3}then a and b are

Answer 1

Answer:

y=2x−3

⇒−1=2a−3

⇒2a=−1+3=2

∴a=

2

2

=1

y=2x−3

b=2×5−3

⇒b=10−3=7

∴b=7

Step-by-step explanation:

thank me til 60 pls