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j2lie
 one year ago
If the slope of the line that passes through the points (a,0) and (1,2) is 1/2, what is the value of a? @jim_thompson5910
j2lie
 one year ago
If the slope of the line that passes through the points (a,0) and (1,2) is 1/2, what is the value of a? @jim_thompson5910

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freckles
 one year ago
Best ResponseYou've already chosen the best response.4have you applied the slope formula?

freckles
 one year ago
Best ResponseYou've already chosen the best response.4\[m=\frac{y_2y_1}{x_2x_1} \]

j2lie
 one year ago
Best ResponseYou've already chosen the best response.0No. I do not know that to do that with this problem.

freckles
 one year ago
Best ResponseYou've already chosen the best response.4well you are given two points on a line and the slope ... which makes me think slope formula since only one of the values is unknown in the pairs given you are given m is 1/2 (x1,y1)=(1,2) and (x2,y2)=(a,0)

freckles
 one year ago
Best ResponseYou've already chosen the best response.4\[\frac{1}{2}=\frac{0(2)}{a1}\] solve for a

freckles
 one year ago
Best ResponseYou've already chosen the best response.4how did you get that?

j2lie
 one year ago
Best ResponseYou've already chosen the best response.00 + 2 is 2 and a  1 is 1

freckles
 one year ago
Best ResponseYou've already chosen the best response.4it might make it easier on you if you flip both sides \[\frac{2}{1}=\frac{a1}{0(2)}\] see if you can solve now

freckles
 one year ago
Best ResponseYou've already chosen the best response.4by the way 2/1 is just 2

jdoe0001
 one year ago
Best ResponseYou've already chosen the best response.0\(\bf \begin{array}{lllll} &x_1&y_1&x_2&y_2\\ % (a,b) &({\color{red}{ a}}\quad ,&{\color{blue}{ 0}})\quad % (c,d) &({\color{red}{ 1}}\quad ,&{\color{blue}{ 2}}) \end{array} \\\quad \\ % slope = m slope = {\color{green}{ m}}= \cfrac{rise}{run} \implies \cfrac{{\color{blue}{ y_2}}{\color{blue}{ y_1}}}{{\color{red}{ x_2}}{\color{red}{ x_1}}}\implies \cfrac{{\color{blue}{ 2}}{\color{blue}{ 0}}}{{\color{red}{ 1}}{\color{red}{ a}}}=\cfrac{1}{2}\)

freckles
 one year ago
Best ResponseYou've already chosen the best response.4confused on how to solve 2=(a1)/2 for a?

freckles
 one year ago
Best ResponseYou've already chosen the best response.4are confused on the flipping part? confused on the equation we got?

j2lie
 one year ago
Best ResponseYou've already chosen the best response.0I am confused on solving with A.

freckles
 one year ago
Best ResponseYou've already chosen the best response.4you mean solve for a?

j2lie
 one year ago
Best ResponseYou've already chosen the best response.0The variable is A in the equation

freckles
 one year ago
Best ResponseYou've already chosen the best response.4don't we have a not A? \[\frac{1}{2}=\frac{0(2)}{a1} \\ \\ 0(2) \text{ is the same as } 2 \\ \text{ you have } \\ \frac{1}{2}=\frac{2}{a1}\]

freckles
 one year ago
Best ResponseYou've already chosen the best response.4you can flip both sides like I did earlier \[\frac{2}{1}=\frac{a1}{2} \\ \text{ now } \frac{2}{1}=2 \\ 2=\frac{a1}{2}\]

freckles
 one year ago
Best ResponseYou've already chosen the best response.4try to undo that division by 2 ...multiply 2 on both sides

freckles
 one year ago
Best ResponseYou've already chosen the best response.4well 2 times 2 is 4 not 1 and how did you put a1 back in the denominator? also 2/2=1 not 4...

freckles
 one year ago
Best ResponseYou've already chosen the best response.4oh you went backwards

freckles
 one year ago
Best ResponseYou've already chosen the best response.4do you see this equation 2=(a1)/2 I was asking you multiply this equation by 2 on both sides

freckles
 one year ago
Best ResponseYou've already chosen the best response.4@Jhannybean you can finish i have to leave I'm sorry

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[2=\frac{a1}{2} \implies 4 = a1 \implies a= 4+1\]
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