Solving Inequalities
What does this sign mean? <
Is less than.
Would the dot on the line be open or filled if the inequality is this ≤?
Filled
What is the formula?
Ax + By = C
What is the formula?
y=mx+b
What is something true about the slopes of 2 parallel lines?
They are both equal or the same
What would you have to do if you multiply or divide by a negative?
Flip the sign
What do you do when the lines on a number line point the opposite way?
You leave the answer as it is.
What is the intercept?
When the line crosses the x and y axis.
In the equation y=3x-7, what is the slope (m) and the y-intercept (b)?
Slope= 3, Y-intercept= -7
What is true about the slopes of 2 perpendicular lines?
How would you say this? x>9
x is greater than 9
What is the point called when 2 lines cross?
The intersection.
Put y=2x+5 in standard form.
-2x+y=5
Write an equation in slope intercept form with the slope being -2 and the Y-intercept 4.
y= -2x+4
What is the slope of a line that is perpendicular to y=3x+2?
m=1/3
3y>9
y>3
Which way would your arrow point if the equation is x<-2?
The left
What are A, B, and C in the equation? 3x-4y=12
A=3, B=-4, C=12
What is the slope intercept form of the equation of a lien passing through (0,6) with a slope of 4.
y=4x+6
Is this parallel or perpendicalr? y=3/4x - 2
What does it mean when there is a line under the inequality for this sign? >
Greater than or = to
Why do you leave a dot open on your line?
Because it does not have a line under it.
Solve for y. 4x + 5y = 10
y= 2
y= -1/2x +3
Are these equations parallel to each other or perpendicular?
y=1/2x+4
y=5x+3
Neither