Parametric equations

Question

x=2t+1,y=2t²

express y in terms of x

Answer 1

x=2t+1,

x-1 =2t

(x-1)/2 =t

Let's plug in that value of t in y=2t².

y= 2 [(x-1)/2]²

y= 2(x-1)²/4

y=(x-1)²/2