I think it's C. But you may need a 2nd answer.
Answer: 12. 1.25 = slope
13. -1/2 = Slope
14. Take two points from the line on the graph and then use the slope formula, y2 - y1/x2 - x1 to get your slope.
15. Use the points in the equation y2 - y1/x2 - x1 to get your slope. Remember to simplify.
Step-by-step explanation:
12. = -6 - 9/ -8 - 4 = 1.25 = slope
13. =-10 - (-3)/9 - (-5) = -1/2 = Slope
3,4,5 units
3+4+5=12
the perimiter can be split into 12 units
48=12 units
divide by 12
4=1 units
3<4<5
longest side is 5 units
4=1unit
times both sides by 5
20=5 units
answer is D. 20