Ax2+bx+c=0 is not a linear equation. Discuss the reason

What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

Graph the line y=4/3 x+1 . use the line tool and select two points on the line.