SOLUTION: Can you please teach me how to find slopes of lines if I'm only given the x or y? For example, finding the slope when y=7

Question 608341: Can you please teach me how to find slopes of lines if I'm only given the x or y? For example, finding the slope when y=7
Found 2 solutions by Alan3354, solver91311:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
finding the slope when y=7
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Slope = diffy/diffx
y is always 7
slope = (7-7)/diffx
slope = 0

Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

The equation describes the set of all ordered pairs where the -coordinate is any real number and the -coordinate is always

So, chosing two arbitrary points from the solution set of , use the slope formula:

Choose and and substitute values:

regardless of the values of the -coordinates. Lines with a zero slope are horizontal.

If you have an equation of the form , then the denominator of the slope formula is zero so the slope is undefined. Lines with an undefined slope are vertical lines.

John

My calculator said it, I believe it, that settles it

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