SOLUTION: I need to find the answer to both the slope and y-intercept. This is not the actual problem but the example I'm working with and it is not showing all the steps I need to understan

Question 850123: I need to find the answer to both the slope and y-intercept. This is not the actual problem but the example I'm working with and it is not showing all the steps I need to understand where the answers are coming from. Below is the example problem I'm working with. Can you please show all steps to the answer for a better understanding?
give the slope and y-intercept for the line that passes through the pair of points (-7,9) and (6,12)
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
First find the slope.

Now use the point slope form with either point,

Now convert to slope-intercept form.

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