Page 326 - Algebra 1

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Practice
f. Write the equation of the graphed line in slope-intercept form
g. Monica’s family will be renting a car on their vacation. (Ex 4) The car rents for an initial fee of $50 plus $0.50 per
mile. Write a linear equation in slope-intercept form to represent this situation and then graph it.
Distributed and Integrated
Expand each expression by using the Distributive Property.
1. x2y3(3xy - 5y) (15)
Evaluate each expression for the given values.
3.
(16)
5.
(35)
*6.
(49)
*7.
(49)
*8.
(49)
*9.
(49)
2. -2x3y3(4x2y - 3xy) (15)
x2y3z if x = 3, y = -2 , and z = 4
Find the x-intercept of the line 3x + 2y - 10 = 0.
Identify the slope and y-intercept of the line 2x - 5y - 6 = 0. Multiple Choice What is the equation of the graphed line?
4. -x2 - y3 if x = -3 and y = -2 (16)
y
y
_1
A y=-3x+3
C y=-3x+3
_1
B y=-3x-3
D y=-3x-3
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Multi-Step The directions on a box of frozen biscuits state to cook one biscuit for 90 seconds on high and to add 15 seconds of cooking time for each additional biscuit. a. Write a linear equation in slope-intercept form to represent the situation.
Identify what the variables y and x represent.
b. Analyze What is the y-intercept of the graph? Does it have any meaning? Why
or why not?
Measurement Conversion The formula for converting from Celsius to Fahrenheit is
F = _9 C + 32, where C is the temperature in degrees Celsius and F is the 5
temperature in degrees Fahrenheit. Identify the slope and the y-intercept of the equation and then graph it.
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Lesson 49 311