What is the slope between points (-1,4) and (2,3)?
-1/3
100
What is the identity matrix?
[10]
[01]
100
When we solve a system of 2 equations, what should our answer look like?
A coordinate point!
100
Find the a.o.s and the vertex of
2x^2-8x+3
a.o.s x=4
Vertex (4, 3)
200
x+2 > 2x+5
x< -3
200
What is the slope between (-3,-5) and (-2,-7)
-2
200
What is the transformation matrix for the reflection across the y-axis?
[-1 0]
[0 1]
200
Solve:
x+2y=7
x-2y =5
(6, .5)
200
Factor and solve for zeros.
x^2-5x-6=0
(x-6)(x+1)
x=6
x=-1
300
3|2x+4|+30=15
NO SOLUTION
300
What is the y-intercept of y=(1/2)x+1.3
1.3
300
What is the transformation matrix to move a matrix up two and left 3? What would we do with this to create our new vertex matrix? (add, multiply, divide, subtract?)
top row of 2's and bottom rows of -3's
WE WOULD ADD THIS
300
Solve
3x+2y=13
y= 3x-7
(3, 2)
300
Factor and Solve for Roots:
3x^2+40x+100
(3x+10)(x+10)
x=-10
x= -10/3
400
|x+5| ≤ 6
-11≤x≤1
400
What is the line with slope perpendicular to y=2x+5, and passes through the point (0,3).
y=(-1/2)x+3
400
Transformation matrix to rotate 180 degrees.
[-1 0]
[0 -1]
400
3x+5y+z=2
-6x=36
-y+7z=-40
(-6, 5, -5)
400
Simplify:
3+2i/(4-3i)
6+17i/25
500
2|3x+7|≥18
x≥2/3
OR
x≤ -16/3
500
What is the line that passes through the points (3, -6) and (-1,2)?