Solving for X
3x=21
A line has slope 4 and y-intercept -2. Write the equation of the line.
y=4x-2
3(x+8)
3x+24
What is the value of the expression
-5x
when x=6?
-30
x-16=4
Add 16 to both sides
What is the slope of the line through the points (2,5) and (4,11)?
3
-4(x+5)
-4x-20
What is the value of the expression
9x-4
when x=3?
23
8x+3=35
1. Subtract 3 from both sides
2. Divide both sides by 8
A line has slope -2 and passes through the point (3,7). What is the y-intercept of the line?
13
2(9x+7)
18x+14
What is the value of the expression
3x+7x-1
when x=2?
19
-3x+10=9x-14
1. Add 3x to both sides/ Subtract 9x from both sides
2. Add 14 to both sides/ Subtract 10 from both sides
3. Divide both sides by 12/ Divide both sides by -12
Find the equation of the line that passes through the points (3,6) and (7,30).
y=6x-12
-3(4-x)
-12+3x)
What is the value of the expression
3(x-5)+4x
when x=10?
55
(x+7)/2 = 2x-16
1. Multiply both sides by 2
2. Subtract x from both sides/ Subtract 4x from both sides.
3. Add 32 to both sides/ Subtract 7 from both sides.
4. Divide both sides by 3/Divide both sides by -3
Line A has the equation
y=1/2 x +4
Line B is parallel to Line A and goes through the point (8,11). What is the equation of Line B?
y=1/2 x+7
10-(x-2)
10-x+2
What is the value of the expression
14x-8x+5(7-x)
when x=4?
39