Solve for the value of X squared.

Step-by-step explanation:

x² + y² = 153 and y = -4x.

=> x² + (-4x)² = 153

=> x² + 16x² = 153

=> 17x² = 153

=> x² = 9.

x² = 9

Step-by-step explanation:

x² + y² = 153 (I)

      y = -4x (II)

Plugin y = -4x in equation (I)

x² + (-4x)² = 153

x² + 16x² = 153

  17x²     = 153

           x² = 153/17

         x² = 9

        x = √9

      x = 3

answer: a

step-by-step explanation:

y-y1=4(x-x1)

step-by-step explanation:

this is point-slope form since you only have 4 as the slope it goes in place of m

hope this : )