Equation Facts
Page 18 #1
What is slope intercept form?
What does the M and the B stand for?
y=mx+b
M: slope
B: y-intercept
Label a point:
Which is X and which is Y
(5,8)
x: 5
y:8
(x,y)
Page 21 #11
Slope of -1/4 and x-intercept of (3,0)
Slope intercept form__________
y=-1/4+3/4
put into point-slope first
Page 22 #15
Find the parallel and perpendicular slopes that passes through the points (-4,0) and (6,2)
m=1 or 1/5
llm= 1 or 1/5
perpendicular slope: 5 or 5/1
True or False:
Walmart has a lower acceptance rate than Harvard
True:
Harvard might be hard to get into with a 4.5 percent admittance rate, but try this on for size: only 2.6 percent of Walmart applicants are accepted.
Page 18 #2
What is point-slope form?
y-y1=m (x-x1)
Page 19 Letter A
Graph the line
What is M?
What is B:
M= 2/1
B= (0,-5)
Page 21 #10
m=-7 , (-3,7)
find point-slope and slope-intercept
Point-slope: y-7=m-7(x+3)
Slope-intercept: y=-7x-14
Page 22 #16
Find the parallel and perpendicular slopes that passes through the points y-2=-3(x-9)
m= -3 or -3/1
llm= -3 or -3/1
perpendicular slope: 1/3
Write the equation of a horizontal line through the point (7,-13)
y=-13
Page 18 #3
What is standard form?
Ax+By=C
Page 19 Letter D
Draw the graph and find the slope
What is the slope?
Undefined
DOUBLE POINTS!!
Page 20 #8
m=-5 , (4,-6)
Find point-slope and standard form
Start in point-slope and then simplify to slope-intercept and turn into standard.
point-slope: y+6=-5(x-4)Standard: 5x+y=14
Page 22 #17
Find the parallel and perpendicular slopes that passes through the points 4x+3y=9
m= -4/3
llm= -4/3
perpendicular slope: 3/4
There is official count for how make licks it takes to get to the center of a Tootsie Pop. How many licks is it?
364 is the official count
Page 18 #3
2 Conditions for standard form
1. "A" cannot be negative (has to be positive)
2. "A" cannot be a fraction
Page 19 Letter B
Graph: y+3=-1/4x(x-8)
*Hint change into slope-intercept form
y=-1/4x-1
M: -1/4
B: (0,-1)
Find slope, point-slope, and standard form
slope: -1 or -1/1
A) Point slope: y-9=-1(x+3)
Standard: x+y=6
B) Point slope: y-6=-1(x+5)
Standard: x+y=1
Page 23 #18
Determine whether the pair of lines are parallel, perpendicular, or intersecting
3x-y=7
-9x+3y=8
m=3
m=3
parallel
True or False:
All Froot Loops are the same flavor
TRUE
Name this equation
y2-y1
_____
x2-x1
Slope equation
"Wine glass formula"
Graph: 2x-4y=8
What are the x and y intercepts?
x: (4,0)
y: (0,-2)
plug 0 in for the variable you don't need
Write the equation of the line given a slope of 0 that goes through the point (1,8)
y-8=0(x-1)
y-8=0
y=8
Page 23 #19
Write the standard form equation of the line that passes through the point (4,6) and is perpendicular to the line 2x+y=8
m=-2
Perpendicular slope: 1/2
y-6=1/2(x-4) ----> y=1/2x+4
standard form: x-2y=-8
True or False:
Scotland chose a unicorn as its officla national animal.
TRUE