Select the term that describes the quadratic portion in this quadratic equation. 7x2-12x+16=0
B, 7x^2 describes the quadratic portion in this quadratic equation. Without 7x^2 you would just have -12x+16, and if you graphed that, it would be a linear equation. The x^2 makes it a parabola because if you put an x value and the negative version of that same x value into that term
(like putting -4 and 4 into 7x^2), you would get the same y value for both the negative and positive number. Because any number squared is always positive (either 4x4 = 16 or -4 x -4 = 16 still). Which is why its a parabola and doesn’t pass the horizontal line test.