Solving Equations
1/7x + 2 = 5
x=21
Solve and graph the inequality.
2 < -4 + 3y
2 < y
Open dot and line pointing to the right ->
Solve a + bx= c for x
x= (c-a)/b
Why do we shade inequalities?
To show where the solutions lie
3(a - 3)- 4=5
a=6
Solve and graph on a number line
-7x - 13 > 22
x < -5
Open dot and line pointing to the left <--
Solve 450= xq -n for q
q=(450+n)/x
Write -4x - 5y = 10 in slope-intercept form, then graph it.
y= -4/5x - 2
m=-4/5
b=(0, -2)
Negative slope line
6(x + 2)- 3= 6x + 12
No solution
Given the function f(x) = 10 – 3x, for what values of x is f(x) < 22.
x > -4
Solve the inequality for x
a + bx > cx - d
x > (-a-d)/(b-c)
or
x < (a+d)/(c-b)
Graph y > -5x - 5
Dashed line, shade to the right of the graph and need test point work.