Solve for x
Solve for X /
x + 12 = 25
x = 13
f(x)= 3x+1
f(3)=?
f(3)=10
The __________ is the set of outputs (y-values).
For x-values, the set of inputs is called the domain.
Range
What is the solution to this system of equations?
y = x + 5
y = 3x + 3
(1, 6)
The solution to 4p + 2 < 2(p + 5) is
(1) p > -6
(2) p < -6
(3) p > 4
(4) p < 4
(4) p < 4
3x + 4 = -7x - 26
x = -3
f(x)=3x2+8
f(-2)=?
f(-2)=20
____________ is the test used to determine whether the graph drawn is a function or not a function.
Vertical line test
Solve the linear equation for x:
5x + 10 = 2x - 8
x= - 6
The solution of the equation 5 − 2x = −4x − 7 is
1) 1
2) 2
3) −2
4) −6
4) -6
2(x+3) = 12
x = 3
f(x)=x2+8x-2
Is the point (2, 20) a part of f(x)?
No the point (2, 18) is part of f(x).
Substitute (2, 20) into the function to check!
In an linear function, y = mx+b. What do "m" and "b" stand for?
(Both answers must be given to receive the points for this question).
m = slope
b = y-intercept
Finish this sentence:
"Linear equations have a constant _____________".
Give at least 2 possible answers to this question.
- Slope
- Change in y over change in x
- Rate of Change
- m
- Rise over run
Which of the following points is NOT a solution to the inequality, y > 3x + 5?
1) (2, 15) 2) (4, 10)
3) (0, 6) 4) (1, 9)
2) (4, 10)
(1/2)x - 1 = 13
x = 28
f(x)=x3 +8x-2
f(-1)=?
f(-1)=-11
For these, every input has only one output.
A function
The solution to 3(x - 8) + 4x = 8x + 4 is
x = -28
Which relation is not a function?
1) {(1,5),(2,6),(3,6),(4,7)}
2) {(4,7),(2,1),(−3,6),(3,4)}
3) {(−1,6),(1,3),(2,5),(1,7)}
4) {(−1,2),(0,5),(5,0),(2,−1)}
3) {(−1,6),(1,3),(2,5),(1,7)}
A function cannot repeat inputs (x-values).
x+3 < 2x-12
x > 15 or 15 < x
A function has the following points:
(1, 5) , (3, 6), (-2, 8) , (a, 5)
Which values of a would make this not a function (List all of them to get the points for this question)
(1, 5), (3, 6), (-2, 8), (a, 5)
¿Qué valores de a harían que esto no sea una función (enumere todos para obtener los puntos para esta pregunta)?
x = 1, x = 3, x = -2
Inputs cannot repeat in a function.
y=ax2+bx+c
This is the equation for what type of function?
Quadratic Function
What is the value of y in the following system of equations?
2x + 3y = 6
2x + y = -2
y= 4
Joy wants to buy strawberries and raspberries to bring to a party. Strawberries cost $1.60 per pound and raspberries cost $1.75 per pound. If she only has $10 to spend on berries, which inequality represents the situation where she buys x pounds of strawberries and y pounds of raspberries?
(1) 1.60x + 1.75y < 10
(2) 1.60x + 1.75y > 10
(3) 1.75x + 1.60y < 10
(4) 1.75x + 1.60y > 10
(1) 1.60x + 1.75y < 10