Derivative and tangent line

What is the equation of the vertical line through (8, -4)?

• x=8
• y=8
• x=-4
• y=-4

Write the slope of the line tangent to the graph of y=x² – 2 at the point x = -8.

• 2

• -4

• -8

• -16

What is the equation of the line tangent to f(x)= 4x²+2x-1 at x=0?

• y+1=2(x+1)

• y=2x-1

• y=2x+2

• y= -x-1

What is the slope of the line normal to the curve y = x² + x at x = 1?

• -1

• -1/2

• -1/3

• -1/4

Find the slope at x = 3 of the equation f(x) = 3x²

• 6x

• 27

• 18

• 3x

• 4

• 5

• 6

• 7

• 6

• 7

• 8

• 9