Slope
Equations
Systems of Equations
Factoring
Graphs
100
What is the slope if two points on a linear line are (5,0) and (10,2)?
(2-0)/(10-5) = 2/5
100
What is the slope-intercept form of a linear line with a slope of 3/4 and a y intercept of -5?
y = 3/4x - 5
100
The solution to a system of a equations is always written as a __________ ________.
Ordered pair: (x,y)
100
In order to factor an expression in the form Ax2 + Bx + C, in must find two factors with a product of ____ and a sum of _____.
Product of AC and sum of B
100
How can you tell if the slope is positive or negative on a linear line graph?
Positive slopes are increasing, from left to right.
Negative slopes are decreasing, from left to right.
200
What is the slope in the equation:
2y = 8x + 4
4
200
What is the slope intercept form of a linear line with points (0,9) and (8, -3)?
y = -3/2 x + 9
200
In order to use the graphing method to solve the systems of equations, you have to...
(explain how to get your solution)
Graph both linear lines and see where the lines intersect. The point of intersection is the solution.
200
What are the factors of -21 that has a sum of 4?
7, -3
200
The Point (0,0) on a graph is called the _______.
The origin
300
What is the slope formula in terms of x and y?
(y2 - y1) / (x2 - x1)
300
What is the point slope form of a linear line with points (4,6) and (8,7)?
y - 6 = 1/4 (x - 4)
300
What are the three methods we've learned this year to solve a system of equations?
Graphing, elimination, and substitution
300
*DOUBLE JEOPARDY*
Factor the expression:
x2 + 9x + 8
(x+1)(x+8)
300
What is the slope and the y intercept of this graph?
y intercept: -5
slope: 3
400
What is the slope of a horizontal linear line?
0
400
Turn this equation from standard form to slope-intercept form:
6x + 2y = 20
y = -3x + 10
400
*DOUBLE JEOPARDY*
Using the elimination method, what is the solution for:
-2x + 4y = 8
6x - 4y = 0
4x = 8 so x=2 and y=3
Solution: (2,3)
400
Factor the expression:
c2 - 7c + 10
(c-2)(c-5)
400
Write an equation in slope-intercept form of this graph:
y = 2x + 1
500
What is the slope of a vertical linear line?
Undefined
500
If two points on a line are (5,5) and (7,7), write the slope-intercept form and the point-slope form of this linear line.
y = x
y - 5 = 1 (x - 5) OR y - 7 = 1 (x - 7)
500
Using substitution, solve this system of equations:
y = 3x
5x - 2y = 10
5x - 2(3x) = 10
5x - 6x = 10
-x = 10 so x = -10 and y = -30
Solution: (-10,-30)
500
Factor the expression:
2x2 + 8x - 10
2(x2 + 4x - 5)
2(x - 1)(x + 5)
500
Graph the line:
y = -1/2x + 4
