solving systems by elimination
writing systems and number of solutions for a system
solving systems by substitution
solving systems by graphing
systems of inequalities
100
to get y by itself in a system you must:
A.eliminate x
B. eliminate y
A. eliminate x
100
what is a system of equations?
two or more equations that can be solved together.
100
solve for y:
y= 10x + 2
x= 5
y= 52
100
can a graph have infintley many solutions?
yes
100
what is an inequality?
a relationship between two expressions or values that are not equal to each other
200
solve for y:
2x - 3y = 5
-2x - 4y = 30
y = -5
200
when solving systems you first must write them in:
standard form
200
solve the system of equations (both x and y)
-2x + y = 1
y= 2x + 3
no solution
200
what is the solution for this graph?
there is no solution
200
what color are the solutions located in for this graph?
purple
300
what is the solution for y?
2x + 3y = 20
-2x + y = 4
y=6
300
how many solutions does this system have?
3x + 2y = 10
4x - 2y = 4
one
300
solve for x:
y = 2x + 5x
x + y = 20
x = 2.9
300
does this graph have more than one soluton?
no
300
what is the solution for this graph?
no solution
400
solve for both x and y:
-2x - 9y = -25
-4x -9y = -23
(-1, -3)
400
put this system into standard form:
-12x + 7 = 35y
-12x + 35y = 7
400
solve for y:
y=5x + 1
y= -3x - 15
y= -39
400
how many solutions does this graph have?
one
400
does this graph match this inequality?
y < -x + 3 y > x -1
yes
500
solve the system for x:
6x - 5y = 2
4x + 3y = 10
x=1.5
500
what are the equations for these two tables?
y= 1.5x - 6
y= 4x + 6.1
500
solve the system of equations (both x and y)
y= 7 - 3x
y= 2x -8
(15 , 52)
500
what is the solution for this graph?
(2,2)
500
which of the following is a solution for this graph? (select two answers)
A. (-1, 2) B. (-6, 3) C. (4, 1) D. (-3, 6) E. (-5, 1)
C , D