Hello there! The answer to your question is C. 1!
To find the slope, subtract the y values over the x values using the formula
![(y^(1) - y^(2))/(x^(1) - x^(2))](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3ys4y1oyrumdw02iojuni8s91m69yu9u40.png)
Insert the values of the points given and solve:
![(5 - 7)/(3 - - 5)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/abvbkrmimm2sjgywbgcv9kicx2m1nxakz5.png)
![(-2)/(-2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/opng0fe2cdqh42bsj83llqpvgrehos6yvd.png)
Now, simplify
![(-1)/(-1)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/liq0xkeuq6s8xalyzeqcgyp5xzzu1nwwze.png)
The negatives cancel each other out, so you are left with:
or 1, making C your answer.
I hope this helps, have a great day!