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On the grid below, draw the graph of y = 2x - 3 for values of x from -2 to 4 - Edexcel - GCSE Maths - Question 3 - 2019 - Paper 2
Question 3
On the grid below, draw the graph of y = 2x - 3 for values of x from -2 to 4. (Total for Question 2 is 3 marks)
Worked Solution & Example Answer:On the grid below, draw the graph of y = 2x - 3 for values of x from -2 to 4 - Edexcel - GCSE Maths - Question 3 - 2019 - Paper 2
Step 1
Step 2
Plot the points on the grid
Answer
Using the calculated y-values, plot the points on the grid:
- For x = -2, plot the point (-2, -7)
- For x = -1, plot the point (-1, -5)
- For x = 0, plot the point (0, -3)
- For x = 1, plot the point (1, -1)
- For x = 2, plot the point (2, 1)
- For x = 3, plot the point (3, 3)
- For x = 4, plot the point (4, 5)
Ensure the points are accurately represented on the grid.
Step 3
Draw the line
Answer
Once the points are plotted, connect them with a straight line. This line should extend through the plotted points and align correctly to reflect the linear relationship in the equation. Make sure to clearly indicate that this is a line with a positive gradient, as the slope of the line is 2.