2: Which equation does not belong with the other three? Explain. Thank you so much in advance.

Answer:
y=x² +6
Step-by-step explanation:
This is the only 2nd-degree equation in the group: y = x² + 6. The others are linear equations.
y = x² + 6
the equation of a line in slope-intercept form is
y = mx + c ( m is the slope and c the y-intercept )
y = 0.5x - 0.2, y = 4x + 3 and y = [tex]\frac{3}{4}[/tex] x + [tex]\frac{1}{3}[/tex]
are all in slope- intercept form and represent equations of straight lines
y = x² + 6 is not in this form and is not a straight line equation.
In fact it is the equation of a parabola