Linear Equations
Find the Y-intercept given the points
(0, 7), (9, 8)
Y2-Y1
X2-X1
Slope point formula
X-3=5
8
4-3+6
7
Find the area of a square if one side is 3cm in length
9cm2
Find the Y-intercept given the points
{(7, 8), (5, 12), (3, 16), (1, 20) (0, 22)}
B=22
Shown as a straight horizontal line on a graph
Zero Slope
5x-8=12
X=4
4*2-6
2
Find the perimeter of a rectangle given one length is 5ft, and another side is 8ft.
26ft
What is the slope of a line given it passes through the points
{(3, 6), (6, 15)}
M=3
The Order of Operations
4x-9=3x+12
6/3-3*6
-16
From the concession stand at a football game, Blake and crew purchased a jumbo bag of popcorn for $2.50 and 3 drinks. The total cost was $12.25. Write an equation to model this situation. Then solve to find the cost of each drink.
3D+2.50=12.25
Each Drink = 3.25
An equation in which variables cancel out, leaving two different numbers on either side of the equal sign.
No solution
42+11x=33
X=1
72-52
24
Amber has $300 in her bank account and she deposits $40 each month. Lexie has $600 in her bank account and she deposits $15 each month. When will they both have the same balance? How much will they have at that time?
12 months and $780
Put the following into Y=MX+B format.
Find the slope of the line given it passes through the points (0, -13) and (-9, -16) .
Y=-1/3x-13
An equation in which variables cancel out, leaving the same number on both side of the equation.
Infinite solutions
5(x+7)-(4x+30)=8x+26
X=-3
3(4-5)-32+5(2+1)
27
The school book club ordered t-shirts for a fundraiser. The shirts cost $260. The book club also paid $2 per shirt to have their logo printed. They plan on selling the shirts for $15 each. How many shirts will they need to sell before they start earning a profit?
20 shirts