Please please tell me if these are correct

[chrystal21]

1. Find the vertex for the function f(x)=x^2+6x-4.
a. (2,12)
b. (-3,-13)
c. (-1,-9)
d. (0,-4)
*Choice B

2. Find the x intercepts of f(x)=x^2+4x-21
a. (-3,0) and (7,0)
b. (-7,0) and (3,0)
c. (0,-3) and (0,7)
d. (-11,0) and (10,0)
*choice A

3. Find the y intercept of f(x)=2x^2+13x-7
a. (-7,0)
b. (0,1/2)
c. (0,-7)
d. (1/2,0)
*Choice C

 

[Mrspi]

1. Find the vertex for the function f(x)=x^2+6x-4.
a. (2,12)
b. (-3,-13)
c. (-1,-9)
d. (0,-4)
*Choice B

2. Find the x intercepts of f(x)=x^2+4x-21
a. (-3,0) and (7,0)
b. (-7,0) and (3,0)
c. (0,-3) and (0,7)
d. (-11,0) and (10,0)
*choice A

3. Find the y intercept of f(x)=2x^2+13x-7
a. (-7,0)
b. (0,1/2)
c. (0,-7)
d. (1/2,0)
*Choice C

All are correct. Good work!