Question

Medals for best answer?

Answer 1

5. How many real number solution does this equation have?
y=-4x^2+7x-8
a. no solutions
b. one solutions
c. two solutions
d.infinetely solutions.


6. how many real number solution does this equation have?
-8x^2-8x-2=0
a.one solutioin
b. two solutions
c. no solutions
d. infintely many solutions

9. Find the solutions in the system
y=x^2-5x+2
y=-6x+4
a. (2,8) and (-1, 2)
b. (-2,8) and (1,-2)
c. (-2,16) and (1,-2)
d. No solutions

10. Find the solutions to the system
y=x^2+8x+2
y=7x+4
a. (-2,-10) and (1,11)
b. (2,10) and (-1,-11)
c. (-2,-34) and (1,11)
d. no solutions

Answer 2

D

Answer 3

i dont know

Answer 4

"5. How many real number solution does this equation have? "
"y=-4x^2+7x-8"
is like
y = Ax^2 + Bx + c

if
B^2 - 4AC > 0, then there are 2 real root solutions
B^2 - 4AC = 0, then there is 1 real root solution
B^2 - 4AC < 0, then there are no real root solutions

Answer 5

i dont understand

Answer 6

do u see how
-4 is like A and
7 is like B and
-8 is like C ?

Answer 7

@selenaannerios

Answer 8

Oh yes i do

Answer 9

so take those values and substitute them into:
B^2 - 4AC
what does that equal?