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 2 years ago
Select the equations that are parallel and perpendicular to y = 3x  1 and that pass through the point (3, 1).
 2 years ago
Select the equations that are parallel and perpendicular to y = 3x  1 and that pass through the point (3, 1).

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jazy
 2 years ago
Best ResponseYou've already chosen the best response.1y = mx + b m is slope y = 3x  1 3 is slope Parallel lines have the same slope. Slope of Perpendicular lines is the opposite reciprocal...change to the opposite sign and find the reciprocal. ex: 2 to 1/2

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1So what is the slope of the parallel line?

Hiamsam
 2 years ago
Best ResponseYou've already chosen the best response.0Oh. okay. positive 1? Since I had to change it

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1The opposite reciprocal of 3 would be a positive 1/3. You switch signs(from  to +). 3 is the same as 3/1...and you find the reciprocal, which is 1/3.  Lets find the equation for the parallel line first. You have a slope of 3 and the given point is (3, 1).

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1Do you understand how the "oppositereciprocal" thing works?

Hiamsam
 2 years ago
Best ResponseYou've already chosen the best response.0Yes, I do know. Just was a little confused at the start

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1Ok (: So are you familiar with PointSlope form?

Hiamsam
 2 years ago
Best ResponseYou've already chosen the best response.0yes, fairly. Need a little help on that .

Hiamsam
 2 years ago
Best ResponseYou've already chosen the best response.0so what's the next step?

Hiamsam
 2 years ago
Best ResponseYou've already chosen the best response.0Alrighty I don't see that for the answer though :/

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1Why'd it delete?! y  y1 = m(x  x1) m is slope x1 and y1 are the values of the point, (x, y) (3, 1) Slope is 3. y  1 = 3(x  3)

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1Strange :/ Okay, so we have to change that^ into SlopeIntercept form. Distribute the 3. Solve for y. y  1 = 3(x  3) y  1 = 3x + 9 Add 1 to both sides. y = 3x + 10 ^There is the equation for the parallel line.

Hiamsam
 2 years ago
Best ResponseYou've already chosen the best response.0I see the answer now :P

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1Yea, so you don't really have to go through finding the perpendicular line. (;

Hiamsam
 2 years ago
Best ResponseYou've already chosen the best response.0True! Can you help me on one last thing?

Hiamsam
 2 years ago
Best ResponseYou've already chosen the best response.0Vivian combined different amounts of white paint, blue paint, and green paint to make 145 milliliters (ml) of paint of a new shade. The amount of white paint was x ml. The amount of blue paint was 10 ml less than twice the amount of white paint, and the amount of green paint was half the amount of blue paint. This is represented in the equation below. x + (2x – 10) + 1/2 (2x – 10) = 145 What was the difference in the amounts of white paint and blue paint Vivian combined? 30 ml 35 ml 40 ml 45 ml
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