Determine the number and type of zeros of the quadratic function based on the value of the discriminant

See below

Step-by-step explanation:

if b^2 - 4ac is greater than 0 then there are 2 answers that are not equal to each other, but both are real.

If b^2 - 4ac = 0 then you have two real answers that are equal

The real problem is what happens when b^2 - 4ac is less than 0? In this case the answer is a complex number of the form

a + bi

a - bi

where i is the square root of - 1

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

happy to

pls mark as brainliest