Unit 7
What strategy would you use to solve this system of equations?
x= 3y - 5
2x + y =16
Substitution
Rewrite the following using exponents:
(x)(x)(x)(x)(x) + (y)(y)(y)(y)(y)(y)(y)(y)
x^5 + y^8
Simplify the expression
√2 x √2 = ?
2
What is the name of this form?
Ax^2 + Bx + C
Standard Form
What form is this expression in?
(x+3)(x-2)
What is the slope of this equation?
y = -⅔ x + 15
-2/3
Which 2 choices are equivalent to x^12
(x^6)(x^6)
(x^6) (x^2)
x^24/x^2
X^14/x^2
Answer: 1 and 4
Convert to simplest form
√54
3√6
What is the greatest common factor?
6x + 3y - 15
3
True or false? There are 0 solutions in an expression when the discriminant is 0.
Answer: False (there is exactly one solution when the discriminant is = to zero)
Find the solution to this system of equations using elimination
2x + y = 9
2x - y = 3
(3,3)
Simplify this expression
10^ -1
1 / 10
What is the name of this type of expression? 300
Ex √50, √23.
Radical
What is the property used to solve this problem?
(x-4)(2x+1)=0
The zero product property
Does this graph have a minimum or maximum?
-x^2+2x+25
Maximum
What are the 3 methods you can use to solve a system of equations question?
Substitution, equal values, elimination
True or false
-5^2 =25
False (-25)
True or False
√-81 = 9
Answer : false
How many boxes are needed to correctly use the box method to solve this problem (DO NOT ACTUALLY SOLVE) 400
(4x^2 - 5x + 3) (-9x^2 + 2x - 10)
9 boxes (3 by 3)
How many solutions does this expression have?
x^2+12x+36
1 (-6,0)
y = 5x -1/3 and y = 5x - 9/27 are plotted on a graph. How many solutions are there?
There infinitely many (same slope, same y intercept)
Simplify this expression
(a)/(b^-1)
True or False
√72 in simplest form is 3√8
False, 2√6
True or false, this expression has a degree of 5
4x^3 + 5x^2 - 7x + 2
NO it has a degree of 3
The axis of symmetry is x = 5, what must the x value of the vertex be ?
5