Algebraic formulae

Find the value of 7j - 12 when j = 2.

• 2

• -2

• 5

• -5

Find the value of 4(3+h) when h= -2.

• 4

• -4

• 7

• -7

Evaluate x/5 when x = 30.

• 5

• 3

• 4

• 6

Evaluate (y-2)/4 when y = 18.

• 1

• 2

• 3

• 4

Given T = 4k.

Make k as the subject.

• T/4

• 4T

• 4+T

• T - 4

p = r + 8.

Express r in terms of p.

• p - 8

• 8 - p

• p + 8

p = 2m - n

Express m in terms of n.

• (p + n)/2

• (p - n)/2

• (n - p)/2

• 2(p + n)

8/x = y

Make x as the subject.

• 8/y

• 8y

• 8 - y

• 8 + y

m = p²

Express p in terms of m.

• √m

• m/2

• m - 2

• m + 2

m = 3p²

Express p in terms of m.

• √(m/3)

• √(3m)

• √(m - 3)

• √(m + 3)