1
Find the value of x:
4(2x+1)=-3(2x-6)
x=1
Use elimination to solve this equation:
5x + y = 9
10x + 2y = 3
0 = -15
No solution
Find the value of x:
2(x+5) = 3x + 5
x = 5
Rewrite into slope intercept form: x - 8y = 16
y = 1/8x -2
Rewrite into slope intercept form:
5x + 2y = -8
y = -5/2x - 4
Find the value of x:
2(4-2x)=-2(x+5)
x = 9
Identify the x and y intercepts: 4x + 2y = -8
x= -2
y = -4
Find the value of x
-5x + 1 + 2x = x - 4x
1 = 0
No solution
Find b: A= bcd
b = A / cd
28 - x ≥ 7(x - 4)
7 ≥ x
3(x-4) = -12 + 3x
0 = 0
Infinitely many solutions
-1 < 9 + x < 17
-10 < x < 8
Use elimination to solve this equation:
x - y = 11
2x + y = 19
x = 10, y = -1, (10,-1), 11 = 11
Find y: -4x + y = 7
y = 7 + 4x
3 + 6x ≤ 3(2x + 1)
0 ≤ 0 no solution
Find the value of y:
5x + 2y = 12
12-5x / 2 = y OR 6 - 5x/2 = y
Use the points to make an equation: (3,-2) (0,-5)
y=mx+b
y = 1x - 5
2(x -30) = 4(x - 10)
x = -10
4x - 5 > 11 or 9 - 8x ≥ 25
x > 4 or x ≤ -2
x + 1 ≤ -3 or -4x < -8
x ≤ -4 or x < 2
find the slope of the two points:
(2,5) and (4,13)
m = 4
Find the slope of the two points:
(-5, 15) (-10,18)
m = -3/5
Use the points to make an equation: (4,3) (0,-5)
y = mx + b
y = 2x - 5
Use substitution to solve the equation:
y = x + 5
y = -2x -4
y = 2, x = -3, (-3, 2)
-50 < 7x + 6 < -8
-8 < x < -2