How do we check to see if a number is a solution to an equation?
We plug it in and solve it.
True of False: A slope is always a positive number.
False, a slope can be negative or positive.
Make the following Equation into a Y= statement ;
2y= 4x + 6
Y = 2x + 3
Equivalent means...
Equal
An equation has an equal sign, an expression does not.
Is the number 4 a solution to the following expression?
5x + 2 = 12
No , it is not
Where is the Slope located in an equation?
Next to the X
In order to rewrite an expression we must do what to both sides?
The same thing!
Name 2 ways you can create an equivalent expression.
multiply both sides by the same number
divide both sides by the same number
add the same number to both sides
subtract the same number from both sides
What is the name of Ms. AlJahne's dog?
10x - 2y = 40
Yes
What is the slope in the following equation:
y = 10x + 2
10
Rewrite the following equation as a Y= statement ;
y - 7 = 2x
y - 2x + 7 or y = 7 - 2x
Are the equations below equivalent?
x + 2 = 5x
2x + 4 = 15x
No because the same thing was not done on both sides of the equation.
Mean, Median, Mode, Minimum, Maximum
Are the coordinates (-2,5) a solution for the following equation?
2x + 26 = 2y
Yes.
In y= form , in Slope-Intercept form
What is the slope and Y-intercept of the following equation ; 4x - y = 12
Slope - 4
Y intercept - 12
Create an equivalent expression for the following equation;
5x + 7 = 22
Multiple Answers.
Is the number 16 a solution for one, both, or neither of the following equations?
2x + 4 = 32
x + 2 = 18
One, x + 2 = 18
What is the Y-Intercept of a line?
Where the line crosses the Y-Axis
What is the slope and Y intercept of the following equation?
11y + 55 = 110x
Slope= 10
Y intercept = -5
Explain why the following expressions are equivalent;
3 - x = 4
9 - 3x = 12The first equation was multiplied by 3 to create the second equation , both equations will have the same solution
Name one thing we learned during the second unit of Algebra 1.
Unit 1 - Dot plots, 5-number summary, histograms, dot plots, etc
Unit 2 - solving equations, slope and y intercept, checking solutions, etc