Unit 1 Day 1 Notes: Name:______________________ Graphing Equations of Lines & Function Notation Date:______________ SLOPE INTERCEPT FORM OF A LINE:_______________________
What is the equation of the line in the graph displayed below:
Let’s graph the equation 1 23
y x �
Slope:______ Y-Intercept:_______
Domain:_________________ Range:__________________
Let’s graph the equation 2 4y x � � .
Slope:______ Y-Intercept:_______
Domain:_________________ Range:__________________
Let’s graph the equation 2 3 6x y� .
Remember it MUST be in slope intercept form in order to graph!
Slope:______ Y-Intercept:_______
Domain:_________________ Range:__________________
Slope:_____ Y-Intercept:____
Equation:___________________
Write the slope as a fraction & y-intercept as a point!
Let’s practice putting equations in slope-intercept form (SOLVE FOR Y!!). Then state the slope and y-intercept.
10 3y x� Slope:_____ Y-Intercept:____
3 4 12x y� Slope:_____ Y-Intercept:____
2 7 14x y� � Slope:_____ Y-Intercept:____
Graph a Vertical line: Graph a Horizontal line:
Find 3 points on your line: Find 3 points on your line:
WHAT DO YOU SEE? WHAT DO YOU SEE?
Equation of your line: Equation of your line:
Using FUNCTION NOTATION
Given f(x) = x2 – 2, find: f(5)= f(-5)= f(0)=
Given g(x) = 2x + 7, find: g(4)= g(-4)= g(a)=
Given h(x) = -2x2+ 7x - 11, find: h(2)= h(2a)= 3h(-3)=
A little more of a challenge: Given f(x) = 2x + 1, find -4[f(3) – f(1)].