No but if u do i’m here to help
M = (y-y)/(x-x)
= 9-1/-7-(-7)
= 8/0
It is a vertical line
This is just a simple division problem. To make your life easier, make them both into improper fractions, 254/5 and 4/1. Use reciprocals to multiply. 254/5 * 1/4. Then you get 127/10, which simplifies to 12 7/10 as your answer.
I hope this helped and did not confuse you!
I think you mean, find the equation from the quadratic formula solution.
10x^2 -x +9 = 0
a=10 b=-1 c=9
x = --1 +-sq root(1 - 4*10*9) / 2*10
x = 1 +-sq root(1 -360) / 20
x = 1 +-sq root( -359) / 20
