One Variable
-3.5y-6.2y=-87.3
y=9
0.05x+925=0.03x+1,250
x=16,250
4x+3=x+2(x+7)
x=11
3x+15=2x+10+x+5
15=15
Infinite
What makes a proportional relationship on a graph?
The line goes through (0,0) the origin.
x-0.15x=3.45
x=3
550-25x=10+15x+20x
x=9
-3(-7-x)=1/2(x+2)
x=-8
3(2x+5)=2(3x+3)
15 does not equal 6
No solution
Find the slope.
(2,18) and (4,36)
What is 9?
-3.8x-5.9x=223.1
x=-23
96-4.5y-3.2y=5.6y+42.80
3x+2=x+4(x+2)
x=-3
5(2x+3)=3(3x+12)
X=21
One solution
Write a linear equation using the following two points.
(4,280) and (2,140)
What is y=70x
4x+12x=320
x=20
6-4x=6x-8x+2
x=2
-3(x-1)+7x=27
x=6
6x+26x-10=8(4x+10)
-10 does not equal 80
No solution
This is the equation for a linear equations that include a y intercept.
What is y=mx+b
Josh sold his bike for 15% less then what he paid for it. If he sold the bike for $580. How much did he pay for it? Whole dollars only
$682
5.3g+9=2.3g+15
g=2
0.25 (x+4)-3=28
x=120
4(4x-2)+1=16x-7
-7=-7
Infinite solutions
Find the slope of the following two points.
(8, 8) and (4,5)
What is 3/4?