Is it Quadratic

A quadtric equation or function has a variable with an exponent of 2.
It is written in the form:
y = ax² + bx + c where a,b,c are any real numbers

The following are examples of quadratic equations

y= 2x²

y = x² + 3x + 5

y = -5x² - 2

y = x(x + 4) Notice the last example if you multiplied it out it equals y = x² + 4x

The following are NOT quadratic equations

y= 2x It is a Linear equation (has no x²)

y = 3x³ + x² + 5x It is a Cubic equation (has x³ in it)

x² + y² = 4 It is a circle (it has x² and y² in it)

The shape of a quadratic graph is called a

Parabola

It is a U shape

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​Quadratic Graphs

The parabola can also be upside down

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​Quadratic Graphs

You see Parabolas all around in real life

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​Quadratic Graphs