 # Which Solutions Work? (1)

In this worksheet, students state whether or not the given solution fits the formula. Key stage:  KS 3

Curriculum topic:   Algebra

Curriculum subtopic:   Use Standard Mathematical Formulae

Difficulty level:   ### QUESTION 1 of 10

Given the formula y = 2x + 3, we can test to see whether the solution  (4,10) works.

Remember that in (4,10), the first number is the x number so this means that

x = 4 and  y = 10

We substitute x = 4 into the formula to see whether it gives y = 10.

y = 2x + 3

y = 2 times x + 3

y = 2 x 4 + 3

y = 8 + 3

y = 11

So x = 4, y = 10 does not fit.

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

(1, 3)

(1, 1)

x = 1, y = 1

x = 1, y = 3

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

(2, 4)

(1, 5)

x = 3, y = 1

x = 3, y = 7

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

(2, 6)

(3, 7)

x = 3, y = 5

x = 4, y = 7

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

(19, 7)

(3, 5)

x = 7, y = 19

x = 4, y = 10

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

(7, 19)

(0, -2)

x = 1, y = 1

x = 10, y = 28

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

(1, 3)

(1, 7)

x = 1, y = 1

x = -1, y = 3

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

(3, 3)

(3, 7)

x = 3, y = 11

x = -1, y = -7

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

(-3, -1)

(-3, -11)

x = 3, y = 1

x = -2, y = 1

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

(-2, 1)

(0, 5)

x = 3, y = 10

x = 5, y = 15

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

(-2, -9)

(-9, -2)

x = 3, y = 15

x = -5, y = -5

• Question 1

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

(1, 1)
x = 1, y = 1
• Question 2

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

(2, 4)
x = 3, y = 7
• Question 3

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

(3, 7)
• Question 4

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

x = 7, y = 19
x = 4, y = 10
• Question 5

Which of the following solutions fit the formula? ....   y = 3x - 2

There may be more than one correct answer.

(7, 19)
(0, -2)
x = 1, y = 1
x = 10, y = 28
• Question 6

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

(1, 7)
x = -1, y = 3
• Question 7

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

x = 3, y = 11
• Question 8

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

(-3, -1)
x = -2, y = 1
• Question 9

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

(-2, 1)
(0, 5)
x = 5, y = 15
• Question 10

Which of the following solutions fit the formula? ....   y = 2x + 5

There may be more than one correct answer.

x = -5, y = -5
---- OR ----

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