Question 564007
Question 1: write an equation for a line that is parallel to the y-axis?
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Here is its graph which is the green line below:
{{{drawing(400,400,-7,7,-7,7, graph(400,400,-7,7,-7,7), green(line(4,15,4,-15)))}}}
It goes through 4 on the x-axis so its equation is x=4 
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Question 2: what is the x-intercept for the line whose equation you wrote?
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That's the point (4,0)
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Question 2 What is the y-intercept for the line whose equation you wrote?
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There is none because parallel lines never intersect.

Edwin</pre>