Solving Equations
Solve: 4x + 7 = 31
x = 6
What is the formula for slope-intercept form?
y = mx + b
Is this a function?
x y
0 5
1 2
2 2
Yes, every input has only one output
What is the slope and y-intercept of this line:
y = -3x - 1
slope = -3, y-intercept = -1
What is the area formula of a rectangle?
base times height (or length times width)
Solve: 2(3x - 4) = 34
x = 7
An elevator starts at a height of 30 feet above the ground and is going up at a rate of 4.5 feet per second. What is the y-intercept in this situation?
Is this a function: {(1, 2), (2, 3), (2, 4)}
NO -> input=2 has two different outputs
What is the slope and y-intercept of this equation?
y-5 = 3(x + 1)
slope = 3, y-intercept = 8
What is the area formula of a triangle?
1/2 b * h
Tiana earned $400 at a summer job and is spending $18 per month on a music subscription. What is the slope in this situation?
-18
The vertical line test says that if a vertical line intersects with a graph more than once, the graph __________ (is or is not?) a function
IS NOT
What is the slope and y-intercept of this equation?
y + 3 = 1/2 (x - 2)
slope = 1/2, intercept = -4
How many sides does an octagon have?
8
Solve:
3p - 1 = 5(p - 1)
p=2
Speedy Moving Truck Rentals charges a rental fee of $80 plus $5 per mile driven. What is the dependent variable in this situation?
cost/dollars
What is the range of this relation: {(0, 1), (4, 1), (5, 1)}
{1}
Find the slope and y-intercept of the line:
2x + 3y = –18
slope = -2/3, y-intercept = –6.
How many degrees are in a right angle?
90°
Solve: 3/7x + 6 = 9
x = 7
Lily's Bakery tracks the number of cookies left in the store on a busy day. They find that since starting the day with 200 cookies, they have sold 18 cookies per hour. What is the independent variable in this situation?
time / hours
What is the domain of this relation: {(0, 1), (3, 5), (6, 11)}
{0, 3, 6}
What is the slope and y-intercept of this line: -2x + 5y = 15
slope = 2/5, y-int = 3
What is the definition of a radius of a circle?
the distance between the center of the circle and the outside of the circle