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September 18th, 2009, 06:45 PM  #1 
Newbie Joined: Sep 2009 Posts: 23 Thanks: 0  I need help on a few slope questions
If someone can help me out with this it'd be greatly appreciated, thanks!! 1. If a line has an undefined slope, it is parallel to a line that has zero slope. true, false, neither 2. When slope m > 0, the line is the graph of a? 3. Given y = mx + b where does the line cross the yaxis? 4. Find the pointslope form of a line with slope m = 2 that passes through the point (1, 3). 5. Find the slopeintercept form of a line with a slope m = 3 that passes through the point (0, 2). 
September 18th, 2009, 07:11 PM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,958 Thanks: 1146 Math Focus: Elementary mathematics and beyond  Re: I need help on a few slope questions
1. False. It is perpendicular. 2. Linear function of x. (increasing) 3. At b. This is the y value when x = 0. 4. Pointslope form of the equation of a line: y  y_1 = m(x  x_1) ? y_1 = 3 ? x_1 = 1 ?y  3 = 2(x +1). Slope = (y  y_1)/(x  x_1). 5. Slopeintercept form of the equation of a line: y = mx + b ? y = 3x + b ?2 = 3(0) + b ?b = 2 ?y = 3x + 2. 
September 18th, 2009, 07:33 PM  #3 
Newbie Joined: Sep 2009 Posts: 23 Thanks: 0  Re: I need help on a few slope questions
thanks but for question 2 the choices i have are below, so which would it be? a. constant function b. decreasing function c. increasing function d. not a function 
September 18th, 2009, 07:36 PM  #4 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,958 Thanks: 1146 Math Focus: Elementary mathematics and beyond  Re: I need help on a few slope questions
The answer would be "c" because as we move along the xaxis to the right the value of y is increasing, that is, as x increases, y increases.

September 18th, 2009, 07:48 PM  #5 
Newbie Joined: Sep 2009 Posts: 23 Thanks: 0  Re: I need help on a few slope questions
thanks, and thanks for explaining it rather than just answering it and me still having no clue how to work these problems


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