Chapter 1
Solve
4-12=-8
Answer
4-12=-8
-4 -4
-12=-12
Write as an inequality
A number x is greater than 3
Answer
x>3
Determine if it is a function or not
0 -3
1 0
2 3
3 2
Answer
Yes it is a function
Write an equation with the slope and y-intercept
Slope=2
y-intercept=9
Answer
y=2x+9
Tell if the ordered pair is a solution
(2,6); x+y=8
3x-y=0
Answer
2+6=8
8=8
6-6=0
0=0
Yes
Solve
x+5=8
Answer
x+5=8
-5 -5
x=3
Write as an inequality
Three is less than the sum of a number s and 4
Answer
3<s+4
Solve
F(x)=6x+9; F(X)= 21
Answer
f(x)=6x+9; f(x)=21
21=6x+9
-9 -9
6x=12
/6 /6
x=2
Write as a linear function
(0,2), (2,4)
Answer
4-2=2
2-0=2
y=x+2
Solve by elimination
y=-x+7
y=x+1
Answer
y=-x+7
y=x+1
2y=8
/2 /2
y=4
4=x+1
-1 -1
x=3
(3,4)
Solve
t-(-5)=9
Answer
t-(-5)=9
t+5=9
-5 -5
t=4
Solve
4<x-2
Answer
4<x-2
+2 +2
x>6
Solve for x and y
2x+3y=12
Answer
2x+3y=12
2*0+3y=12
/3 /3
y=4
2x+3*0=12
/2 /2
x=6
Write in point slope form
(3,5);m=-1
Answer
y-5=-1(x-3)
Solve by substitution
x=y-2
4x-y=10
Answer
4y-8-y=10
-3y-8=10
+8 +8
-3y=18
/-3 /-3
y=-6
x=-6-2
x=-8
(-8,-6)
Solve
-3(3+x)+4(x-6)=-4
Answer
-9-3x+4x-24=-4
-33+x=-4
+33 +33
x=29
Solve
x/2>-2
Answer
x/2>-2
*2 *2
x>-4
Find the slope and y-intercept
y=-3x+2
Answer
y=-3x+2
Slope= -3
Y-intercept= 2
Determine whether it is linear or nonlinear
X 5,6,7,8
Y -4,4,-4,4
Answer
It is not linear
Solve by elimination
x+2y=13
-x+y=5
Answer
x+2y=13
-x+y=5 +
3y=18
/3 /3
y=6
x+12=13
-12 -12
x=1
(1,6)
Solve
12v+10v+14=80
Answer
12v+10v+14=80
22v+14=80
-14 -14
22v=66
/22 /22
v=3
Solve
z-(-7)<5
Answers
z-(-7)<5
-7 -7
z<-2
Solve the equation for x when x=-3,0,5
f(x)= x+8
Answer
f(x)=-3+8
f(x)=5
f(x)=0+8
f(x)=8
f(x)=5+8
f(x)=13
f(x)=5,8,13
Find the common difference
4,3 2/3, 3 1/3, 3
Answer
1/3 is the common difference
Tell whether the ordered pair is a solution
-6x+4y<6;(-3,-3)
Answer
18-12<6
6<6
No