Equation Elimination
Writing Equations
(No) Substitute
But Mr. Yurgens!
200
The solution to the system:
5x + 10y = -5
-5x - y = 32
(-7,3)
200
The equation of the line passing through (-3,4) and (7,7)
y= 3/10(x+3)+4
or
y = 3/10(x-7)+7
200
What is the solution to the system
y = -x -32
y = 7x
(-4,-28)
200
If a line has slope m = 5 and passes through (4,7) and (6,a), what is the value of a?
17
400
The solution to the system:
-5x + 5y = -10
6x + 5y = 1
(1,-1)
400
The equation of the line
y = 2/3(x+6)
or y = 2/3x+4
400
The solution to the system:
y = 5x
2y = 8x + 18
(1,5)
400
The solutions to the equations:
7x - 4y = 13
-2y + 4x = 10
(7,9)
600
The solution to:
5x + 5y = 30
10x + 3y = -3
(-3,9)
600
The equation of this line:
y = -4/5(x+8)+12
or y = -4/5(x-2)+4
or y = -4/5(x-12)-4
600
The solution to the system:
-x + y = 30
x = 7y
(-35,-5)
600
The number of solutions to:
y = 2/7x + 7
7y = 2x + 49
oo
800
At what point do the lines intersect:
x - y = 9
-4x - y = -21
(6,-3)
800
What is the equation of a line parallel to
y = 5(x-3) + 2
passing through the origin
y = 5x
800
9x + 10y = -12
y = 3-3x
(2, -3)
800
A line has slope 4/3 and passes through the point (2,10) and (a,98). What is a?
68
1000
Find the solution to the system:
4/3x-3y = 14/3
1/4x -1/4y = 1
(-1,-2)
1000
What is the equation of the line perpendicular to this one, passing through the same y-intercept?
y = -x +4
1000
5x - y = 21
x = 2y - 3
(5,4)
1000
14y = 5x + 13
(x-5)/7 = y
(-6, -11/7)