Solve Equations
x+15=75
x=60
What operation would you use to solve:
2x+3y=16
2x+6y=30
Subtraction
(x+3)(x-4)
x2-1x-12
x2+7x+10
(x+5)(x+2)
x2+8
up 8
What is slope intercept form?
y=mx+b
How do you find the mean?
add up all the numbers and then divide by how many numbers they give you
2x+22=66
x=22
What operation would you use to solve:
4x-9y=23
3x+9y=31
Addition
(x-9)(x+7)
x2-2x-63
x2-9x-10
(x-10)(x+1)
(x-7)2
Right 7
y=2/3x-9
2/3
How do you find the median?
First, put the numbers in order then find the middle number
3(x+8)=75
x=17
What would you multiply by to solve this:
2x+4y=18
6x+5y=15
Multiply the top by 3 to eliminate the x's would be the easiest
(2x+1)(x+4)
2x2+9x+4
x2+19x+60
(x+4)(x+15)
3x2-6
skinnier(stretched) by 3 and down 6
If m=3/4 and b=-8 write the slope intercept form
y=3/4x-8
What is the mode:
1,1,1,2,3,4,4,4,5,5,6,7
1 and 4
2(2x-6)+4=32
x=10
Solve for x:
8x+3y=24
-4x - 3y=8
x=8
(3x+4)(x-5)
x2-5x+6
(x-2)(x-3)
-(x+3)2-9
reflected, left 3, down 9
Yes, it is linear
What is the median?
2,4,6,7,4,1,9
4
5x+16=3x-42
x=-29
Solve:
4x+8y=40
4x+6y=20
(-10,10)
(2x-5)(3x-8)
6x2-31x+40
x2-3x-28
(x-7)(x+4)
-1/2x2-5
reflected, wider(compressed) by 1/2, down 5
If the y-intercept is 4 and the slope is -2 what is the slope intercept form?
y=-2x+4
What is the mean?
2,3,4,5,6,7,8,9
5.5