What is the value of c in the given quadratic regression equation?y= -0.10x2 + 1.23x a. 1 b. -0.19 c. 1.23 d. 0

The general formula of the quadratic regression equation is:
y = ax^2 + bx + c
The given equation is:
y= -0.10x^2 + 1.23x
Comparing the two equations, we will find that:
a= coefficient of x^2 = -0.1
b = coefficient of x = 1.23
c = coefficient of x^0 (term with no x) = zero

Based on this, the right choice is:
d. 0