SOLUTION: Hello; I was wondering if you could help me with the following problem; What is the equation of the line that contains the points with (x,y) coordinates (-3,7) and (5,-1)? Sor

Question 156165: Hello;
I was wondering if you could help me with the following problem;
What is the equation of the line that contains the points with (x,y) coordinates (-3,7) and (5,-1)?
Sorry, I don't have book's name or the number.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

First let's find the slope of the line through the points

and

Start with the slope formula.

Plug in , , , and

Subtract from to get

Subtract from to get

Reduce

So the slope of the line that goes through the points

and

is

Now let's use the point slope formula:

Start with the point slope formula

Plug in , , and

Rewrite as

Distribute

Multiply

Add 7 to both sides.

Combine like terms.

Simplify

So the equation that goes through the points

and

is

Notice how the graph of goes through the points

and

. So this visually verifies our answer.
Graph of through the points

and

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