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Question 1 of 6
1
of 6
The graph shows 5 lines labelled A, B, C, D and E. Match the lines to the equations.
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$$x = -4$$
$$y = {1\over 3}x - 4$$
$$y = -4 $$
$$y = {1\over 3}x + 4$$
$$y = -{1\over 3}x + 4$$
A (green)
B (blue)
C (black)
D (pink)
E (purple)
Horizontal lines can be written in the form $$y=a$$ where $$a$$ is a constant. Vertical lines can be written in the form $$x = a$$ where $$a$$ is a constant.
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