Slope-Intercept Form

Gold Day – 2/5/2015Blue Day – 2/10/2015

Bell Ringer

Label “Slope Dudes” ski path way.

Agenda & News

Friday, 2/13/2015 is the last day of the 4th 6 weeks.

Monday, 2/16/2015 is a student holiday

Test corrections – Need to be done this week

Unit 5 – Linear functions and Applications Start slope-intercept form Human slope

Reminders

Slope is represented by the letter m Slope is equal to the rise divided run m=

Vocabulary

Linear functions – is a function that graphs a line.

Parent function – is the simplest equation of a function.

The linear parent function is y=x or f(x)=x

Linear equations model linear functions. In a linear equation, the variable cannot be raised to a power other than 1.

Foldable

Slope-Intercept form is y=mx+b

Walk the line

Locate the x and y axis Number all 4 ways starting from the

origin. (0,0) Need Packet and Pencil

Example 1

Assigned x-coordinate________If y=x, then your y-coordinate is equal to the x-coordinate.

X-coordinate is _____ which is also _____.

Ordered pair is (____,____)

Example 1 continued

What is your equation? Graph what you see.

Example 2

Assigned x-coordinate________If y=-x, then your y-coordinate is equal to the negative x-coordinate.

X-coordinate is _____, so y is -_____.

Ordered pair is (____,____)

Example 2 continued

What is your equation? Graph what you see.

Example 3

Assigned x-coordinate________If y=x+3, then your y-coordinate is equal to the x-coordinate plus 3.

X-coordinate is _____, so y is _____+3.

Ordered pair is (____,____)

Example 3 continued

What is your equation? Graph what you see.

Example 4

Assigned x-coordinate________If y=x – 3, then your y-coordinate is equal to the x-coordinate minus 3.

X-coordinate is _____, so y is x – _____.

Ordered pair is (____,____)

Example 4 continued

What is your equation? Graph what you see.

Example 5

Assigned x-coordinate________If y=3x, then your y-coordinate is equal to the 3 multiplied by the x-coordinate.

X-coordinate is _____, so y is 3_____.

Ordered pair is (____,____)

Example 5 continued

What is your equation? Graph what you see.

Example 6

Assigned x-coordinate________If y= ⅓ x, then your y-coordinate is equal to the ⅓ multiplied by the x-coordinate.

X-coordinate is _____, so y is ⅓_____.

Ordered pair is (____,____)

Example 6 continued

What is your equation? Graph what you see.

Comparing graphs

Let’s look back at the graphs and compare. What do you notice? What do you think the reason for the difference? y=x and y=-x________________________________________________________________________________________________________________________________________________

Comparing graphs

Let’s look back at the graphs and compare. What do you notice? What do you think the reason for the difference? y=x+3 and y=x–3 ________________________________________________________________________________________________________________________________________________

Comparing graphs

Let’s look back at the graphs and compare. What do you notice? What do you think the reason for the difference? y=3x and y=⅓x________________________________________________________________________________________________________________________________________________