Question

The relationship between Mary’s age (M) and John’s age (J) can be represented by the equation: M = J + 4

Answer 1

Explanation:

Given equation: M = J + 4; or its equivalent J = M - 4

M = 5, J = 5 - 4 = 1

M = 8, J = 8 - 4 = 4

J = 12, M = 12 + 4 = 16

M = 15, J = 15 - 4 = 11

J = 20, M = 20 + 4 = 24

Answer 2

for each value, subsitute the values given in the table and plug them into the equation M = J + 4

1. M = J + 4 when M = 5

5 = J + 4

J = 1

2. M = J + 4 when M = 8

8 = J + 4

J = 4

3. M = J + 4 when J = 12

M = 12 + 4

M = 16

4. M = J + 4 when M = 15

15 = J + 4

J = 11

5. M = J + 4 when J = 20

M = 20 + 4

M = 24

so the answers in order of the boxes are:

1, 4, 16, 11, 24