Equations
x/4=-10
x=-40
Evaluate
3x+4; x=-5
-11
A number plus 8 equals 13
x+8=13
What is the domain and range?
Domain is all possible x values.
Range is all possible y values.
What is slope formula?
5-3x=-16
x=7
Simplify
2(3x+4)
6x+8
The senior class is going on a field trip, a bus holds 50 students per bus and 20 students are taking cars to the trip. If 420 students are going on the trip, how many buses do they need? WRITE THE EQUATION DO NOT SOLVE.
50x+20=420
What are the 2 ways that we can determine if a relation is function?
What are the 4 types of slope?
Positive, Negative, Zero, Undefined
-2(3x-4)+10=-6
x=4
Simplify
-3(5x-4)+10-6x
-21x+22
Rufus collected 100 pounds of aluminum cans to recycle. He plans to collect an additional 25 pounds each week. Write the equation in slope intercept form, for the total pounds, P, of aluminum cans after w weeks.
P=25w+100
What is domain, range and is this a function?
{(-2,8) (5,7) (3,-8) (5, 10)}
D=-2,5,3
R=8,7,-8,10
No it is not a function.What is slope intercept formula?
y=mx+b
3x-4=5x+10
x=-7
Evaluate
4x+3y-z; x=2, y=3 and z=-4
21
A car rental company charges $140 per week to rent and $25 per day to rent a car. Write the equation in slope intercept form.
y=25x+140
Evaluate the function
f(x)=2x+7; f(4)
f(4)=15
What is the slope and y intercept?
y=-2x+7
m=-2, b=7
4(2x-5)+10=5(x+7)
x=15
Simplify
-(x+14)+3y-14+5x+8
4x+3y-20
A car rental company charges $140 per week to rent and $25 per day to rent a car. Write the equation in slope intercept form. If you rent the car for 10 days, how much will the car cost?
If you rented the car and the bill was $190, how many days did you rent the car?
$215
9 days
Evaluate the function
f(x)=-2x-4; f(x)=14
x=-9
Find the slope
(-5,8) (-9, 10)
-1/2