13. (a-b)^2=a^2-2ab+b^2
B is the answer
14. B is the answer
( x+9)(x-3)= x^2+6x-27
15. B is the answer
(x+6)(x-5)=x^2+x-30
16. D is the answer
(x-6y)(x-4y)=x^2-10xy+24y^2
17. C is the answer
(2x+5)(3x-4)=6x^2+7x-20
18. B is the answer
(5x+7)(x-2)=5x^2-3x-14
Here is the answer with my work !!
12. I need the graphs to answer it
11. y = 1/2x - 1
10. The first graph is the best
<h2>
Answer: m = -1</h2>
Step-by-step explanation:
If you follow the formula : y2 - y1 / x2 - x1
You will get 
m = -1
* Hopefully this helps:) Mark me the brainliest:)!!!
