Linear Equations
Inequalities
Absolute Value
Solving Linear Equations
100
Which of the statements are true for perpendicular lines?
1) Intersect at exactly 90 degrees
2) Never intersect
3) Opposite reciprocal slope
4) Same slope
2 and 4
100
Write the inequality represented by the graphs in terms of x.
x > 5
x is less than or equal to 3
100
Absolute value is the distance from ___ on a number line.
Zero
100
Solve the equations by graphing:
y = -2x + 3
- x + 2y = -4
(2, -1)
200
Write the equation of a line parallel to -5/7x+4 that passes through (-5, 5)
y= -5/7x + 10/7
200
Is 2x+4>6 AND -2x>5 possible?
No
200
Simplify |2x+5| > 4
x>-1 OR x<-9/2
200
Solve the system by substituting:
y = 8 + x
2y + 3 = x
(-19, -11)
300
Write the equation of a line that passes through (-1,4) and is perpendicular to y=1/3x+2
y = -3x+1
300
Four times a number is less than the three times the number subtracted by two
4x < 3x-2
or
300
Is (1,1) a solution of 3x - 4y > 9?
No.
300
Solve by elimination: y = 4x - 5 and 2y = 3x + 5
(3,7)
400
Write the equation of all 3 lines of the triangle.
AB = 1
BC = -3
CA = 0
400
Simplify 4x+6>9x-4
x<2
400
Graph the inequality -2y+10<6x.
400
There are fifteen workers employed on a highway project, some are paid $180 per day and some are paid $155 per day. The daily payroll is 2400. how many workers are employed at a wage of $155?
12 workers
500
Write the equation of a line that passes through (2,4) and (1,2) and is perpendicular to y = 2x + 8
Not possible; they are parallel
500
Graph 2x - 5 greater than or equal to 3 or x + 4 less than or equal to 11
All real numbers
500
Simplify 2|x-5|+4<20
x>-9 and x is less than or equal to 19
500
Solve the system of equations:
y = 1/2x + 4
4x - 8y = 7
No solution.