Quadratics by Quadratics

What is the y-intercept of: y=7x²+2x -1

• (0, 1)

• (0, -1)

• (1, 0)

• (-1, 0)

Which direction will this parabola open?

• upwards

• downwards

What is the green dot on the parabola called?

• maximum

• minumum

• roots

• zeros

The axis of symmetry line passes through which point?

• y-intercept

• any random point

• vertex

• none of these

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Factor completely
k² -2k - 24

• (k+4)(k-6)

• (k+4)(k+6)

• (k+6)(k-1)

• (k-4)(k+6)

Factor completely
k²+7x+10

• (k+2)(k+5)

• (k-2)(k-5)

• (k+10)(k+4)

• (k+2)(k-5)

Factor completely
n² + 16n + 63

• (n-7)(n+4)

• (n+7)(n-9)

• (n-3)(n-10)

• (n+7)(n+9)

Identify the 'a' value: y = 16x² -8x -24

• 16

• 8

• -8

• -24

Identify the 'b' value: y = 16x² -8x -24

• 16

• -8

• 8

• -24