4x + 3x + 2x
9x
(5, 7) and (3, 6)
1/2
What is the slope formula?
y2-y1/x2-x1
f(x)=3x+9
f(-1)
f(-1)=3(-1)+9
6
What are the 4 phrases for Slope Dude
PUFF PUFF POSITIVE
NICE NEGATIVE
THIS IS ZERO FUN
UNDEFINED
5x + 3x + 4 + 2
8x + 6
(2, 5) and (8, 1)
-2/3
John traveled 567 miles in 9 hours.
How fast was he driving?
63mph
f(x)=3x+9
f(3)
f(3)=3(3)+9
18
Solve f(x) = x/5 for x = 50
f(50) = 10
-7x + 3x + 8 - 6
-4x + 2
(0, 25) and (10, 0)
-5/2
The speeds of Car A and Car B are illustrated in the table and graph. Which car is moving at a greater speed?
Car A at 70 mph
f(x)=3x+9
f(2)
f(2)=3(2)+9
15
Solve f(x) = 5(x - 15) + 3 for x = 12
f(12) = -12
3 + 3n + -5n - n -12
-3n - 9
(2,3) and (9,7)
4/7
A weather balloon ascends at a constant rate. The height of the balloon 8 minutes after beginning to ascend is 2,320 feet. The height 15 minutes after ascending is 4,350 feet.
What is the change in the elevation of the balloon per minute?
What is 290 feet per minute
Solve f(x) = x + 3 for x = 4.
f(4) = 7
Solve f(x) = -9x - 2 for x = 5
f(5) = -47
6 + 3x - 7y -12 - 7y + 10x
13x - 14y - 6?
(0,10) and (5, -5)
-3
The balance in Howard’s savings account increases at a constant rate. The balance 2 months after Howard opens the account is $250. It is $625 after 5 months.
What was the change in the balance of Howard’s savings account per month?
$125 a month
f(x)=3x+9
f(f(1))
f(f(1))=3(1)+9=12
f(12)=3(12)+9=45
Solve f(x) = 12/x + 2(3 - x) for x = -6
f(-6) = 16