CHAPTER 1
the answer to the solved equation
-n/5=-3
what is n=15
5(-n/5)=(-3)5
-n/-=-15/-
n=15
write the phrase as an equation
a number x is greater than 3
what is x>3
x>3
Determine whether the relation is a function
(-2,2), (-1,2), (0,2), (1,0), (2,0)
What is yes, it is a function
every input has one output
write and equation of the line with the given slope and y-intercept. slope:2 y-int:9
what is y=2x+9
solve the systems of linear equations using elimination
x+2y=13
-x+y=5
what is (1,6)
the answer to the solved equation
y-3x=13
what is y=3x+13
y-3x(+3x)=13+(3x)
y=3x+13
write the phrase as an equation
three times a number w is less than 18
what is 3w<18
3w<18
determine whether the relation is a function
(4,0), (8,7), (6,4), (4,3), (5,2)
what is no, the relation isn't a function
the input 4 has two outputs 0 and 3
write an equation with a slope of 1 and a y-intercept of 5
what is y=x+5
solve the system of linear equations by elimination
9x+y=2
-4x-y=-17
what is (-3,29)
the answer to the solved equation
11=12-q
what is q=1
11=12-q
11-12=-q
-1=-q
1=q
graph the equation
-1>t
what is -1>t
<----o
<----|----|----|--->
-1 0 1
determine whether the equation is linear or nonlinear
y=7-3x
what is linear
y=-3x+7
it can be put in slope intercept form
write an equation with a slope of -3
what is y=-3x
solve the system of linear equations by elimination
5x+6y=50
x-6y=-26
what is (4,5)
the answer to the solved equation
26-4s=9s
what is 2=s
26-4s=9s
26=9s+4s
26=13s
26/13=s
2=s
solve the equation
x+2=3
what is x=1
x+2=3
x=3-2
x=1
solve the equation for the function -2, 0, 5
g(x)=3x-6
what is -12,-6,9
g(-2)=3(-2)-6=-12
g(0)=3(0)-6=-6
g(5)=3(5)-6=9
write an equation with a slope of -7 and a y-intercept of 1
what is y=-7x+1
solve the system of linear equations by elimination
-x+y=4
x+3y=4
what is (-2,2)
the answer to the solved equation
|X-4|=6
What is x=10,-2
|X-4|=6
X-4=6 X-4=-6
X=6+4 X=-6+4
X=10 X=-2
X=10,-2
Is -4 an answer to the inequality
x+8<-3
-4.5x>-21
what is no
-4+8<-3 -4.5x>-21
4<-3 no -4.5(-4)>-21
18>-21 yes
solve the equation using -2,0,5
r(x)=-x-7
what is -5,-7,-12
r(-2)=-(-2)-7 ---- r(-2)=2-7= -5
r(0)=-(0)-7=-7
r(5)=-(5)-7= -12
write an equation with a slope of 2/3 and a y-intercept of -8
what is y=2/3x-8
solve the system of linear equations by elimination
-3x-5y=-7
-4x+5y=14
what is (-1,2)