Linear Equations
Linear Systems
Linear Inequalities
Systems of Inequalities
100
Which letter is the slope?
y=mx+b
m
100
What is the solution of this system?
(3,-1)
100
How would you say this inequality in words?
6x>=-7
"6x is greater than or equal to -7"
100
If you graphed the inequality below, would you shade below it or above it?
y>=3x+4
above
200
What is the formula for slope?
(rise)/(run) or (y_2-y_1)/(x_2-x_1)
200
Why should you use elimination for this system?
3x+9y=2
2x-9y=8
Because if you add the equations the 9y and -9y will cancel out (eliminate)
200
Write the inequality represented by this number line. Use x for your variable.
x>3
200
True or False: the point where the lines intersect is part of the solution.
False
300
Put this equation in slope-intercept form
10=5x-4y
y=5/4x-5/2
300
Why should you use substitution for this system?
5x+6y=20
x=7-2y
Because the x is already by itself (isolated) in the second equation.
300
Draw this compound inequality on a number line.
5<x<=9
300
Which inequality sign matches this graph?
>
400
What is the equation of this line in slope-intercept form?
y=-2x+3
400
Solve this system of equations for both variables.
x+y=40
4x+2y=100
x=10, y=30
400
Solve this inequality for x.
-2x-5>=1
x<=-3
400
Write the inequality (in slope intercept form) that matches the green line in the graph.
y<-1/2x-2