Which system of equations can be used to find the roots of the equation 4x^2 = x^3 + 2x ○ y=-4x^2
y=x^3 + 2x

○y=x^3 - 4x^2 + 2x
y= 0

○y = 4x^2
y = -x^3 - 2x

○y =4x^2
y= x^3 + 2x

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

What is the equation of the graph below? y=sec(x)-4

Evaluate the following expression 1/3^2