Linear Equations
Find the Slope
(-1, 6) & (2, -12)
-6
x-y=11
2x+y=19
(10, -1)
f(x)=-2x-4
Find f(-1)
-2
What is the vertex?
y=2(x-1)2+6
(1, 6)
What room number is this?
211
Find the x & y intercepts
3x-7y=42
x-int: (14, 0)
y-int: (0, -6)
4x+y =1
y=-2x+9
(-4, 17)
g(x)=x2-10
Find x when g(x)=-1
x=3/-3
What is the vertex?
y=4x2+8x+1
(-1, -3)
Where did Mrs. McGrady and Ms. L go to college?
Southern and Uconn
Solve for x
-4x-8>20
x<-7
2y+7x=-5
5y-7x=12
(-1, 1)
f(x)=-3x+6
g(x)=x2+1
Find f(1)+g(-2)
8
Find the x-intercepts
y=-2(x-1)2+18
(4, 0) (-2, 0)
How many kids does Mrs. McGrady have?
2
The monthly cost to own a phone consists of $0.10 per text message and a fee of $30. If you only had $45 to spend, how many text messages could you send?
150 text messages is $45.
2x+4y=8
x+2y=4
Infinite Solutions
f(x)=2x2+3x
h(x)=2x-1
Find h(f(2))
27
Find the x-intercepts
y=2x2-14x+24
(3, 0) (4, 0)
What kind of dog does Ms. L have?
yellow lab
Write the equation of the line in all three forms
(-8, 4) (-6, 12)
y-4=4(x+8)
y=4x+34
y-4x=36
Word Problem!
A theatre sells tickets for a play. Adult tickets cost $15 each and child tickets cost $10 each. If the theatre sold a total of 120 tickets and collected $1,550, how many adult and child tickets were sold?
70 adult, 50 child
h(x)=x+1
k(x)=2x2+3
Find k(h(x))
2x2+4x+5
The height of a ball thrown is modeled by
h(t)=-5t2+20t+30
When did the ball hit the ground?
-20 +/- (10*square root of 10) /-10
Which crumbl cookie flavor does Mrs. McGrady hate?
Milk chocolate chip