Answer:

Explanation:
Let the points be A and B
A ( -6 , 3 ) ⇒ ( x₁ , y₁ )
B ( -7 , -4 )⇒ ( x₂ , y₂ )
Now, let's find the slope:

Plug the values
⇒

When there is a ( - ) in front of an expression in parentheses, change the sign of each term in the expression
⇒

Calculate
⇒

Any expression divided by -1 equals it's opposite
⇒

Hope I helped!
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