Linear Equations
What is the slope of the line represented by the equation y=3x+4
3
What is a function?
A function is a rule that matches each input to exactly one output
Solve the inequality -2x+2 > 10
x < 4
What is the degree of 8x4+2x3y2
5th degree
What does the y-intercept represent in the equation?
Starting point, or initial value/amount
Solve for x: 2x+5=15
x=5
Determine if the relation is a function: \{(1, 2), (2, 3), (1, 4)\}.
No
Graph the inequality: y < x+1
on board
Simplify the expression 3x2+4x−2+5x2−x+6
8x2+3x+4
How do you find the slope from two points (x1,y1) and (x2,y2)?
y2-y1/ x2-x1
What is the y-intercept of the equation y−2=4(x+1)
b=6
What is the domain of the function f(x)=x2−4
All real Numbers
Write the compound inequality for "x is between 3 and 7".
3 < x < 7
What is the degree of the polynomial 2x3+3x2−x+1
3
What is the standard form of a linear equation?
ax+by=c
Write the equation of a line in slope-intercept form with a slope of 2 and passing through the point (1,3)
y=2x+1
Evaluate f(3) if f(x)=2x2−5
13
What are the solutions for the inequality 2x+3≥11
x ≥ 4
Factor the polynomial x2−9
(x+3)(x-3)
Graph the equation y=−3x+6
On board
If f(x)=2x+3 and g(x)=x−1, what is f(x) - g(x)?
x+4
Identify the range of the function f(x)=x2
0 is less than or equal to y is less than postive infinity
If 5x−2≤3 what is the solution set?
x ≤ 1
If P(x)=x2+4x+4, what are the roots of the polynomial.
(hint: Factor)
(x+2)2
Describe how to determine if a graph is a function using the vertical line test.
If any vertical line on a graph has more than one point on it, it is NOT a function.