Solve.
2x=18
x=9
A number x is greater than 3.
x>3
Tell whether it is a function.
(1,3) (2,4) (1,5)
Not a function
write an equation of the points in slope-intercept form.
(-3,5) (0,-1)
is (2,5) a solution to the system
x+y=7 2x-3y=-11
Yes; it is a solution
Solve.
2(2-x)+4=20
x=-6
Solve the inequality.
x-6>-10
x>-4
Tell whether it is a linear or nonlinear function.
y=5x+2
Linear
write an equation in point slope form.
(-8,3) slope=1/4
y-3=1/4(x+8)
Solve by substitution.
3x+3y=18 x=3+3
0,6
Solve.
-2(3y+1)=-6y-2
Infinitely many solutions
Solve the inequality.
-24<3x
Evaluate f(x)=9x+3 when f(x)=27
x=0
Tell whether the equations are parallel or perpendicular y=3x+2 y=4+3x
Parallel
Solve by elimination.
-3x+5y=10 3x+2y=4
2,-8
l3+xl=-3
No solution
solve the inequality.
8b-3>4(2b+3)
No solution
Find the x and y intercepts.
3x+4y=12
x int=4
y int=3
What are the next 3 terms
3,7,11
15,19,23
Solve the system.
-2x+y=3 -4x+2y=6
infinitely many solutions
Solve for y.
3y+12x=9
y=4x+3
Solve the compound inequality.
-4<x-2<3
-2<x<5
Find the slope.
(3,9) (9,27)
slope=3
14,11,8,5
is (3,5) a solution?
y<2x y>x+1
yes