Linear Functions
What is the vertex?
x2+12x+11
(-6,-25)
y=4(2x)
Which value represents the the initial value?
4
What should you do the night before the STAAR test?
Go to bed early and get a good night sleep.
How do you create a table in Desmos?
Click the plus sign in the top left.
Solve for x
7x+3=2x+13
What are the solutions to this graph?
x2+12x+11
-11 and -1
y=4(2x)
Which value represents the the rate?
2
What should you do the morning of the STAAR test?
Eat a good breakfast.
How can we solve equations using Desmos? For example 4x-3=3x+5
Type each side in its own row. Then find the x coordinate of the intersection of the lines.
y=12x-13
12
What are the roots to this graph?
x2+12x+11
-11 and -1
y=4(2x)
What is the horizontal asymptote to the equation above?
y=0
What calculator do we use?
Desmos
What should you do when you see the word equivalent?
Type in the expression in the problem and the answer choices. The answer choice that matches is correct.
Solve for h.
5(3h-9)-12=12-7(h-9)
What is the axis of symmetry of the graph?
x2+12x+11
y=4(2x)
Is this equation a growth or decay?
growth
What should you NEVER do on a multiple choice question?
Leave it blank - even if you do not know the answer make an educated guess because you have a 25% chance of getting right. It will be wrong if you leave it blank.
f(x)=3x+4. How do I find f(14)?
First type the function, then in the next row type f(14).
What is the slope of the line represented by the equation below? y = 1/2 x + 3
1/2
What is the domain to this graph?
x2+12x+11
All real numbers
Write the equation for the following problem. The initial value is 5 and the functions is decreasing at a rate of 7%.
y=5(1-.07)x or y=5(.93)x
--The easy ones?
--The difficult ones?
EASY!!!
How do I make an equation of a line from a table?
Enter at least two points from the table. Then type y1~mx1+b.