Download Day 2 1.1 Continued

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-DAY 2 1.1 Continued and 1.2
HW Answers
1.1
P9 #3-18 mult. of 3, 45, 55
3. a) No
3. b) Yes
6.
Day 2
1.1 cont. & 1.2 Linear Equations in 2 variables
Standard Form of the Equation of a Circle
(𝑥 − ℎ)2 + 𝑦 − 𝑘
What looks familiar?
2
= 𝑟2
A circle with center (h,k) and radius r consists of
all points (x,y) whose distance from (h,k) is r.
2
2
2
(𝑥 − ℎ) + 𝑦 − 𝑘
=𝑟
Example 1:
Find the radius and center. Graph.
𝑥 2 + 𝑦 − 4 2 = 25
Example 2:
Write the standard form of the
equation of a circle whose endpoints
of a diameter are
(-4, -1) and (4, 1)
1.2 Linear Equations in Two Variables
Tell me everything you know about slope,
slope-intercept form, and graphing lines.
Graphing lines
Example 1: y = -3/2x +6
Finding slope
Slope Formula:
Example 2: Find the slope of the line passing
through (2,4) (4,-4)
Writing equations of a line
Example 3: Write an equation of a line passing
through (10,-6) with a slope of -1.
Parallel/Perpendicular lines
Example 4: Determine whether lines A and B
passing through the pairs of points are
parallel, perpendicular, or neither.
A: (-2,-1)(1,5)
B: (1,3) (5, -5)
Copy box on pg. 18 in notes
Equations of Lines
1.
2.
3.
4.
5.
Standard form: Ax + By + C = 0
Vertical line: x = a
Horizontal line: y = b
Slope intercept form: y = mx + b
Point slope form: y – y = m(x – x)
HOMEWORK:
P10 #57, 60, 63, 66, 67
p21 #9 - 25 odds, 29-31, 39, 41
Copy box on pg. 18 into notes
Thursday will be a 3 question lesson quiz over x and y
intercepts.