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Does It Fit?

In this worksheet, students state whether or not the given solution fits the formula.

'Does It Fit?' worksheet

Key stage:  KS 3

Curriculum topic:  Algebra

Curriculum subtopic:  Use Standard Mathematical Formulae

Difficulty level:  

Worksheet Overview

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.

Does the solution given below fit the formula? ....   y = 3x - 2 

(2, 8)

No

Yes

Does the solution given below fit the formula? ....   y = 3x - 2 

(7, 19)

No

Yes

Does the solution given below fit the formula? ....   y = 5x - 7 

(3, 2)

No

Yes

Does the solution given below fit the formula? ....   y = 5x - 7 

(3, 9)

No

Yes

Does the solution given below fit the formula? ....   y = 5x - 7 

(13, 4)

No

Yes

Does the solution given below fit the formula? ....   y = 5x - 7 

(1, -2)

No

Yes

Does the solution given below fit the formula? ....   y = 6x + 5 

(0, 5)

No

Yes

Does the solution given below fit the formula? ....   y = 6x + 5 

(9, 59)

No

Yes

Does the solution given below fit the formula? ....   y = 6x + 5 

(11, 69)

No

Yes

Does the solution given below fit the formula? ....   y = 6x - 5 

(12, 67)

No

Yes

  • Question 1

Does the solution given below fit the formula? ....   y = 3x - 2 

(2, 8)

CORRECT ANSWER
No
  • Question 2

Does the solution given below fit the formula? ....   y = 3x - 2 

(7, 19)

CORRECT ANSWER
Yes
  • Question 3

Does the solution given below fit the formula? ....   y = 5x - 7 

(3, 2)

CORRECT ANSWER
No
  • Question 4

Does the solution given below fit the formula? ....   y = 5x - 7 

(3, 9)

CORRECT ANSWER
No
  • Question 5

Does the solution given below fit the formula? ....   y = 5x - 7 

(13, 4)

CORRECT ANSWER
No
  • Question 6

Does the solution given below fit the formula? ....   y = 5x - 7 

(1, -2)

CORRECT ANSWER
Yes
  • Question 7

Does the solution given below fit the formula? ....   y = 6x + 5 

(0, 5)

CORRECT ANSWER
Yes
  • Question 8

Does the solution given below fit the formula? ....   y = 6x + 5 

(9, 59)

CORRECT ANSWER
Yes
  • Question 9

Does the solution given below fit the formula? ....   y = 6x + 5 

(11, 69)

CORRECT ANSWER
No
  • Question 10

Does the solution given below fit the formula? ....   y = 6x - 5 

(12, 67)

CORRECT ANSWER
Yes
---- OR ----

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