Chapter 1
Solve when x = 4
x2 - 3x / 5x3
4/320
1/80
Is the function linear? Evaluate when x = -6
f(x) = 3x+4
yes
f(-6) = -14
Is (5, -2) a solution of the system?
2x+6y= - 2
3x - 2y =4
yes
Factor
x^2+3x-38
(x+7)(x-4)
Simplify
3f+5+9f-8
12f-3
Find the slope of the line passing through the points
(7, - 4) and (-6, 7)
m = -13/11
Solve the matrix subtraction problem
(Mary will write it)
Ask Mary
Factor
x^2-81
(x+9)(x-9)
Solve
4(2x-3) = 6 - (3-2x)
5/2
Is the ordered pair (-3, 7) a solution of the inequality 7x-9y <= -10
yes
Does the system have infinite, one, or no solutions?
x-4y=2
2x-8y=5
none
solve for x
x^2-2x-15
x= -3, 5
Solve the inequality and graph your solution
6x-5 < 25
x < 5
A rental car costs $25 plus a $4 per mile driven. Write an equation relating the cost (y) to the miles driven (x).
y = 4x + 25
Solve the system of equations.
3x+4y=4
3x+y=10
y=-2
x=4
Factor
2x^2-x-3
(2x-3)(x+1)
|2x - 4| - 1 >0
x > 5/2
x< 3/2
Find the slope and y intercept of the graph of
5x-4y = 20
m = 5/4
b = -5
Solve the matrix multiplication problem
(Mary will write)
Ask Mary
10x^2+5x-5
5(2x-1)(x+1)