EXPRESSIONS, EQUATIONS, AND FUNCTIONS
11-square root of x where x=64
What is 3.
11-8=3
Identify the slope and y-intercept: 6x+3y=18
What is m=-2;b=6
Rearrange and simplify into
Y=mX+b standard form.
Equation of the line that passes through the point (-2,9) and has slope -2.
What is y=-2x+5
You have to solve for "B"
B=5
Solve the linear system: 5x+y=4, 6x-y=7
What is x=1, y=-1 or (1,-1)
5x+y=4 + 6x-y=7
11x=11
x=1
Simplify: -7x(x-13)
What is -7x2+91x.
Find the X-intercept and Y-intercept:
-2x+5y=-20
What is x-intercept=10; y-intercept=-4
y=2/5x-4
put a zero in for y and solve for x
put a zero in for x and solve for y
Equation in y-intercept form of the line that passes through the two given points: (3,9) (1,1).
What is y=4x-3
-16-(-25.2).
What is 9.2.
Solve for x: 16x-4=4(2x-3)
What is x=-1.
You buy apples at $2 per pound and oranges at $3.50 per pound. What is an expression for the total cost of fruit purchased? Also, what is the total cost of 7lbs apples and 4lbs oranges?
x = apples y = oranges c = cost
What is 2x+3.5y=c What is $28
An elevator moves at a rate of -5.8 feet per second from a height of 500 feet above ground. It takes 6 seconds for the elevator to make its first stop. How many feet above the ground is the elevator now?
What is 465.2 feet.
Solve proportion: b/8=9/4
What is b=18.
cross multiply
A rectangular banner is 16 feet long and has an area of 80 square feet. What is the perimeter of the banner?
What is 42 feet.
Rectangle is 16 by 5
True or False: If a number is positive, then its opposite is negative.
What is True.
"Additive Inverse"
Graph: y=-x+7
What is look at graph.
-1/1 slope (-x) go one down and one to the right
+7 is the y-intercept
x&y 0,7 1,6 4,3 6,1
Solve the linear system: 2x+9y=16, 5x=1-3y
What is x=-1;y=2 or (-1,2)
2x+9y=16, 5x+3y=1, 3(5x+3y=1)=15x+9y=3
15x+9y=3 - 2x+9y=16 = 13x=-13 = x=-1