Quadratic and Exponential Curve of Best Fit

Quadratic & Exponential Functions

By Ms. Hoffman

Multiple Choice

Which of the following equations is QUADRATIC?

• y = 2x

• y = x²

• y = 2^x

Multiple Choice

What does DOMAIN represent?

• all possible X values

• all possible Y values

Draw

Draw what the parent function y=x² should look like

Multiple Choice

How should 2x² + 3x = 11 be rewritten to put into DESMOS?

• 2x² + 3x = 11

• 2x² + 3x + 11

• 2x² + 3x - 11

Multiple Choice

given f(x) = 3x, what is f (9) = ?

• 39

• 12

• 6

• 27

Exponential Functions

​ y = a (b)^x

a = STARTING AMOUNT or Y-INTERCEPT

b = RATE

when b is GREATER than 1, it's GROWTH

when b is LESS than 1, it's DECAY​

Some text here about the topic of discussion

Multiple Choice

what is the y-intercept of y = 1500 (1.2)^x

• 1500

• 1.2

Multiple Choice

Does y = 1500 (0.98)^x represent growth or decay?

• growth

• decay

Draw

draw an example of exponential GROWTH

​using exponents in desmos...

​NOW, go back and count your 👍(checks), ~s, and Xs and mark them on your paper

Poll

How many CHECKs did you get?

• 16 or more

• 10-15

• 5-10

• 0-5

Poll

Type how many ~ (medium) questions you had

• 16+

• 10-15

• 5-10

• 0-5

Poll

How many X questions (too hard) did you get?

• 16+

• 10-15

• 5-10

• 0-5

Draw

for fun now.... draw your best dinosaur