Question

Can you spot any mistakes below?

Q1. Make y the subject of the formula:

k=y(squared)+a
√k =y+a
√k - a=y
y=√k-a


Q2. Express in terms of t

t=v/4+1
t-1+v/4
t-1/4=v

Please help I do not know if there are any mistakes

Answer 1

In Q1, The equation k = y² + a is correct,

To make y the subject of the formula, √k = y + a is incorrect, it should be √k = y + √a

√k - √a = y

In Q2, t = v/4 + 1 is correct

t - 1 + v/4 is incorrect, it should be t - 1 = v/4

t - 1/4 = v

so the correct answer is t-1/4=v