Find the value of:
9 + m when m = 8
14 + v when v = 15
n - 2 when n = 5
n - 8 when n = 44
\dfrac{n}{7} when n = 14
\dfrac{u}{9} when u = 54
u \times 5 when u = 6
n \times 9 when n = 8
2x + 9 when x = 4
y^2 when y = -2
x^2 - 4x when x = 3
\dfrac{x+10}{4} when x = 2
\dfrac{3x}{4} when x = 8
2 \left( x+7 \right) when x = 4
\left( x+2 \right) \left( x - 1 \right) when x = -3
4y^2 + 9 when y = 2
Find the value of:
m + n when m = 7 and n = 12
4 x + 2 y + 3 when x = 5 and y = 4
x^2 - 4y when x = -2 and y = 5
8a + 4b - 9 when a = 2 and b = 5
\dfrac{5xy}{9} when x = 3 and y = 6
abc when a = 3, b = -2 and c = -1
For each formula find the value of y for the given value of x:
y = 6 x - 9, when x = 12.
y = \dfrac{x}{9} + 6, when x = 63.
y = 4-3x, when x = 7.
y = 14x+\dfrac{18}{5}, when x = \dfrac{1}{10}.
Explain how to evaluate 2s + 3t^2 - u when s = 2, t = -1 and u = 4.
Consider the following formulae:
q = p + 7
Complete the table:
| p | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| q | 8 | 9 | 10 |
Find the value of q when p = 30.
q = 3 p
Complete the table:
| p | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| q | 3 | 6 | 9 |
Find the value of q when p = 20.
q = 6 p + 4
Complete the table:
| p | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| q | 10 | 16 | 22 |
Find the value of q when p = 40.
n = m - 7
Complete the table:
| m | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|
| n | 3 | 4 | 5 |
Find the value of n when m = 20.
q = 5 p - 3.
Complete the table:
| p | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| q | 2 | 7 | 12 |
Find the value of q when p = 20.
q = p^{2} + 5.
Complete the table:
| p | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| q | 6 | 9 | 14 |
Find the value of q when p = 20.
For each equation below, complete a table of values of the form:
| x | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| y |