Answer:
Cool. Carlos is a genius.
1. Slope: (Yb - Ya) / (Xb - Xa)
= (99 - 9) / (45 - 7)
= 90/38
2. Y-Intercept
Y = mx + b
9 = (90/38) * 7 + b
9 = (90/38) * (7/1) + b
9 = 630/38 + b
Answer:
I believe the first one would be A, and the second would be and 6.25 for the last one. I'm not 100 percent sure, but it's my best guess, I hope it helps, my apologies if it is wrong.
If you graph it,the equation will have a real solution and the solution has to cross the x Axis
