Simplifying
What is 2(-3)2-7
11
Given an equation in y=mx+b form, if the b value is decreased by 3 what direction does the graph move?
DOWN!
What type of Factoring do you always look for first?
Greatest Common Factor (GCF)
x's do not repeat
Name one other word for solution (as done in class)
Answers may vary
What is x5(x3)
x8
What 2 things does a slope describe about the graph?
Steepness and Direction
What do you need in order to perform Difference of Perfect Squares?
Perfect Squares separated by a subtraction sign
What does range mean?
Range is the y-values of a function.
How do you know an equation is quadratic?
Highest exponent is 2
What is x2-3x+7+2x-7x2-27 in standard form?
-6x2-x-20
Solve for x: 3x - 7 = 7x +3
-5/2
What is the difference between a case 1 and case 2 trinomial?
Case 1 has a leading coefficient of 1. Case 2 has a leading coefficient not equal to 1.
Given f(x) = 3x - 5, find f(-2)
-11
What 3 qualifications do you need for something to be in standard form?
simplified, =0, exponents in descending order
What is 2-x -(15+7x)?
-8x-13
How can you tell if a slope is undefined or equal to 0 just by looking at the graph?
Zero slope is a horizontal line while an undefined slope is a vertical line.
Factor this: x2-15x+50
(x-10)(x-5)
Explain how the vertical line test works.
If you can draw a vertical line through a graph and it will never cross more than once - it is a function. If you can draw a vertical line ANYWHERE and it touches the graph twice, it fails the test and is not a function.
What two things are you concerned with for graphing an inequality that you are not with an equation?
If dashed or solid line and where it is shaded
What is (x-5)(x+3)?
x2-2x-15
Solve for V1 given R1V1=V2
V2/R1
Factor this completely: x4-16.
(x2+4)(x+2)(x-2)
What is the inverse of f(x) = 3x-2?
(x+2)/3
Explain all the steps to completing the square.
Answers may vary.