Write the expression of the following phrase:
Multiply 7 times a number and add one
7x + 1
100
What does the "m" represent in the equation y = mx + b?
The "m" represents the slope.
100
What does the "b" represent in the equation y = mx + b
The starting amount/value/number or the y-intercept.
100
What is the slope and the y-intercept in the following equation:
y = -5 + 8x
Slope = 8
Y-inter = -5
200
A pair of shoes are 20% off. How much does Luke save if the shoes he likes have a regular price of $99? Include the exact number of cents.
Luke saves $19.80.
200
What is the Pythagorean Theorem?
a^2 + b^2 = c^2
200
What is the slope of all horizontal lines.
The slope of all horizontal lines is zero.
200
True or False:
All vertical lines have an undefined slope. In other words, all vertical lines don't have an existing slope.
TRUE!
200
Fill in the Blanks:
When looking for the slope of a line, you must find the difference of _____________ and divide it by the difference of _______________.
...you must find the difference of y and...difference of x.
300
Multiply the following:
(2x - 1) (5x + 8)
10x^2 + 11x - 8
300
Write the expression of the following phrase:
Subtract n from 10 and then square the answer.
(10 - n)^2
300
If the y-values of a table are increasing by 27, and the x-values are increasing by 9, what is the slope?
The slope is 3.
300
What is the slope of the line that crosses the following two points:
(4,1) and (-8, 5)
The slope is -1/3.
300
If in a graph you notice that to get from one point to the next you must run 10 and rise 15, what is the slope of the line?
The slope is 3/2.
400
A cell phone company orders 800 new phones from a manufacturer. If 1.4% of the phones are defective, how many phones are defective?
11 phones are defective.
400
If the length of a leg measures 11, and the hypotenuse measures 15, what is the length of the other leg? Round to two decimal places if necessary.
The length of the other leg is 10.20.
400
Look at number 19 from the review.
y = x + 4
400
A plant is 10 cm tall when it was first planted. Since then, it has grown approximately 0.5 cm per day. Write a linear equation that represents this situation.
y = 0.5x + 10
400
Tell whether the lines for each pair of equations are parallel, perpendicular, or neither:
y = -0.5x - 11
16x - 8y = -8
Perpendicular
500
Mary worked 18 hours last week and got paid $12 per hour. If the government took 15% in taxes, how much money was left for her from her pay check?
Mary had $183.60 left.
500
Look at number 44 from the exam review.
10
500
Look at number 28 from the review?
a.) Plant 3
b.) Plant 3
500
A customer bought potting soil for $17.50 and 4 plants. The total bill was $53.50. The customer came up with the equation y = 17.50 + 4x to represent his situation. How much was each plant?