if x = ??
Solve Equations
Solve More Equations
Solve Proportions
Rewrite Equations
100
If y = 2x - 1 what is the y if x = 2?
3
100
5x = –25
x = -5
100
3x – 8 = 16
x = 8
100
x/15 = 2/5
x = 6
100
Write the equation so that y is a function of x: 12 = 9x + 3y
y = -3x + 4
200
If y = -2x - 1 what is the y if x = 2?
-5
200
4.7x - 2.5 + 2.7x = 12.8 - 1.6x
x = 1.7
200
(2/3)(4x – 1) = – 22
x = -8
200
(x+8)/3 = (2x + 4)/(5)
x = 28
200
Write the equation so that y is a function of x: 2 + 6y = 3x + 4
y = 1/2x + 1/3
300
If y = 2(x - 1) what is the y if x = 2?
2
300
4(2x + 3) = 6(2 - x)
x = 0
300
2 - 15x = 5(-3x + 2)
No Solution
300
2/-3 = (4x + 4)/(2x + 14)
x = -2.5
300
The surface area of a prism is S = 2B + Ph Solve for h
h = (S - 2B)/P
400
If y = (3/4)x - 6 what is the y if x = 4?
-3
400
2(3x + 2) = (0.5)(12x + 8)
Identity
400
14 - 0.2(x - 10) = 0.4(25 + x)
x = 10
400
(16.5 + 3x)/3 = (0.9 - x)/-5
x = -7.1
400
Solve the equation for y. ay + c = by
y = -c/(a - b)
500
If y = (2x - 1) / 2 what is y if x = 7?
6.5
500
a(2x + 3) = 8x + 12 For what value of a is the equation an identity?
When a = 4
500
0.125(5x + 64) = 0.25(20 + 2x)
x = -24
500
(3 + x)/x = (5 + 2x)/2x
x = 0
500
Solve for a. x = (a + b + c)/(ab)
a = (b + c)/(bx - 1)