Unit 2
Solve: -6 + 8a -16
8a-22
solve for h: 24 = -3 + h
h = 27
Write this as a ratio: 28 minutes to 1 hour
7/15
What is slope?
rise/run
If two lines are parallel they have no solution. (T/F)
T
solve: 5(n + 6) -21
5n + 9
solve for x: (x-1)/6 = 2
x =13
Are 4/36 and 15/135 proportional?
T/F A function cannot have repeated x values.
T
Solve for x,y: y= -4 , 3x-5y =23
(1, -4)
Simplify and factor: 7x-2y-8y+11x
2(9x-5y)
k^2 +20 = 420 solve for k
k= +20, -20
Solve for r: (r-1)/5 = (r+6)/10
r= 8
What is the slope of (-4,1) and (11,1)
0
Solve for x,y: 2x+4y=-2, 5x-y=6
(1,-1)
(-2ab)(6a^2b^3)
-12a#b^4
solve for y: -2y + 22 < 18
y >2
18 is what percent of 40?
45 percent
Change to slope intercept form: 5x + 2y =6
y = -5/2x + 3
Solve for x,y : 2x-3y=-20, 7x-y=-13
(-1,6)
Solve and write in scientific notation: (9.5 x 10^-2)(1.4 x 10^-3)
1.33 x 10^-4
-2(5k-7) <= 11-3(k+6)
k >= 3
Find the final price of a sofa that costs 625 with a 3 percent markup.
643.75
Write the equation of a vertical line at x = -2
x =-2