Both y=
Substitute for y
Substitute for x
Review
500
y = 3x - 6
y = -x + 2
(2,0)
500
y = 2x + 3
4x + 2y = -2
(-1,1)
500
x = -2y + 1
3x + 6y = 3
infinite solutions
500
What is the solution to this system of equations?
no solution
500
y = 4x - 3
y = 2x + 3
(3,9)
500
-9x + 3y = -4
y = 3x - 4
no solution
500
2x - 3y = 12
x = 7y - 5
(9,2)
500
If a system of equations has INFINITE SOLUTIONS and this is one equation, what would be the other equation?
y = 2x + 4
y = 2x + 4
500
JC has $200 and deposits $8 each week. Kyla has $420 and withdraws $12 each week.
Write a system of equations to model this situation.
y = 8x + 200
y = -12x + 420
500
y = -2x + 4
6x + 3y = 12
infinite solutions
500
x = -4y - 2
3x + 7y = 9
(10, -3)
500
What is the solution to this system of equations?
(-1,3)
500
JC has $200 and deposits $8 each week. Kyla has $420 and withdraws $12 each week.
When will they have the same balance?
11 weeks
500
3x + 5y = 41
y = 4x - 1
(2,7)
500
-3x + 15y = 2
x = 5y + 2
no solution
500
Is the point (2,-1) the solution to this system of equations?
y = 3x - 7
4x - 5y = 13
Yes