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ccchristian1
 one year ago
A pair of equations is shown below:
y = 8x − 9
y = 4x − 1
Part A: Explain how you will solve the pair of equations by substitution or elimination. Show all the steps and write the solution. (5 points)
Part B: If the two equations are graphed, at what point will the lines representing the two equations intersect? Explain your answer. (5 points)
ccchristian1
 one year ago
A pair of equations is shown below: y = 8x − 9 y = 4x − 1 Part A: Explain how you will solve the pair of equations by substitution or elimination. Show all the steps and write the solution. (5 points) Part B: If the two equations are graphed, at what point will the lines representing the two equations intersect? Explain your answer. (5 points)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I have no clue ;; Try tagging so of the mods and ambassadors.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@nincompoop @Preetha @pooja195 @triciaal

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1k that's enough.. anyway for a we can just use substitution.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1suppose we have two equations y=8x9 and y=4x1. If we subsitute y =4x1 into the first equation, we obtain 4x1=8x9 we need all the variable terms on the left side of the equation and all of the constant terms on the right side of the equation. Therefore, subtract 8x from both sides and add one on both sides 4x8x1=8x8x9 4x1 = 9 4x1+1 = 9+1 4x = 8 dividing 4 on both sides we obtain x = 2 4x = 8   4 4 x = 2 now to check to see if we got the right answer we substitute x = 2 back into the original equations y=8x9 and y=4x1. y = 8(2)  9 = 169 =7 y=4(2)1 = 81 = 7 Both of our y values are 7 7 = 8x 9 7 = 169 7=7 7 = 4x1 7=81 7=7 Since we have 7 on both sides when x = 2, we have the correct answer.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1as for part B I think I have already done it.. when two equations intersect, they have a point in common If we let x = 0 1 2 for y=8x9, we have x y =8x9 0 9 1 89 = 1 2 169 = 7 Similarly, for y =4x1 x y =4x1 0 1 1 41 =3 2 81 = 7 both of these equations have the point (2,7) in common. So the two lines will meet at point (2,7) . I would draw on OS, but lately their drawing system has been going nuts.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1you can use what I typed on here xD!

ccchristian1
 one year ago
Best ResponseYou've already chosen the best response.0you got more time, i will post the other question in a different post so you can earn snother medal
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