Question

If the ordered pairs $(x,-1)$ and $(5,y)$ belong to the set $(a,b):b=2a-3$, find the values of x and y ?

Answer 1

$(a,b):b=2a-3(x,-1):-1=2x-32x=2x=1(5,y):y=2\left(5\right)-3y=10-3=7$