If you replace c with -4 and y with 2, your equation becomes -4 - 14. Evaluate and you get -18, which is your answer.
Answer:
You should do your homework.
Step-by-step explanation: It's not good if you don't do it.
(1,-1)(2,2)
slope = (2 - (-1) / (2 - 1) = 3/1 = 3
y = mx + b
slope(m) = 3
use either of ur points...(2,2)...x = 2 and y = 2
now we sub and find b, the y int
2 = 3(2) + b
2 = 6 + b
2 - 6 = b
-4 = b
so ur equation is : y = 3x - 4
The discriminant is the value of b²-4ac
rewrite the equation in standard form: 3x²-10x-2=0
b=-10, a=3, c=-2
b²-4ac=(-10)²-4*3*(-2)=100+24=124
124 is the answer.