Chapter 1
Solve the equation.
y+8=-11
y=-19
On page 133, what is the measure of angle 8?
140
y=3/5 x
What is y if x is 2?
6/5
Solve the system of equations by graphing:
y=2x-3
y=x+
(5,7)
On page 279, problem 1, is the relation shown a function?
No, the 7 goes to 6 and 8.
3.2=-0.4n
On page 133, what is the measure of angle 5?
140
y=3/5 x
What is y if x is 5?
y=3
y=-x+4
x+3y=0
Solve the system of equations.
(6,-2)
On page 279, problem 2 is the relation a function.
Yes, they all go to one output.
t=12(pi)
On page 133, what is the measure of angle 7?
40
On page 192, problem 7, what is the slope?
1
Solve the system of equations.
x-y=-2
2x-3y=-2
(-4, -2)
y=2x-3
If x=-4, solve for y.
y=-11
We have a triangle that has sides 3x, x, and 40. Solve for x.
x=35
40
On page 192, problem 8, what is the slope?
1/2
Solve the system of equations using substitution.
y=-3x-7
y=x+9
(-4,5)
In the table on page 281, problem 11, is the function linear?
yes, you add 3 each time to the top and 9 each time to the bottom
A trapezoid has sides x, x, 1/2 x, and 1/2 x. What is the value of x?
x=120
On pager 134, what is the value of x if the angles of a triangle are 49 degrees, a right angle, and angle x?
x=41
y=2x-6
What is the slope?
2
Solve the system of equations using elimination.
-x+5y=28
x+3y=20
(2,6)
No, nonlinear. You add different things to the bottom each time.