Question

if the ondered pairs (a,-1) and (5,6) belong to {(x, y) /y=2x+3} is, then the values of a and b are​

Answer 1

1.) y=2x+3

-1=2(a) +3

-1=2a+3

-1-3=2a

4= 2a

a=4÷2

a=2.

2.) y=2x+3

b=2(5)+3

b=10 +3

b= 13.

Answer: a=2,b=13.