Graphing Quadratic Functions Explained

What tool can you use when you see a picture of a graphing calculator next to a problem?

• A graphing calculator or program

• A ruler

• A protractor

• A compass

What is the first step in graphing a quadratic function without a calculator?

• Using a graphing program

• Creating a table of values

• Guessing the shape

• Drawing the parabola directly

What is the y-value when you plug in x = 0 in the equation y = x² - 4x + 7?

• 0

• 12

• 7

• 4

When you plug in a negative value and square it, what is the result?

• The same negative number

• A positive number

• Zero

• A negative number

What should you do if your parabola does not form a smooth curve?

• Ignore it

• Change the equation

• Draw a straight line instead

• Check your work for errors

What is the result of 2 * (-2)² in the equation y = 2x² - 16x + 24?

• 16

• 4

• 32

• 8

What is the y-value when x = 2 in the equation y = 2x² - 16x + 24?

• 32

• 8

• 0

• 24

If your y-values are too large to fit on the graph, what should you do?

• Ignore the large values

• Choose different x-values

• Change the equation

• Use a different graph paper

What happens to the y-values of a quadratic function when the leading coefficient is positive?

• They go down and then up

• They form a straight line

• They stay constant

• They go up and then down

What is the y-value when x = 1 in the equation y = 2x² - 9?

• 2

• 9

• 1

• -7