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ang233499
20.01.2020 •
Mathematics
Apair 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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Ответ:
I would use elimination.
y = 8x - 9
(-2) y = 4x - 2 (to eliminate this equation needs 4 to equal -8)
-2y =-8x + 4
-2y = 4
y = -2
substitute y = -2 into first equation to solve for x
y = 8x -9
-2 = 8x - 9
7 = 8x
7/8 = x (solution is a fraction)
Part B
The 2 lines intersect at (2,7)
Ответ:
AND I OOP HEHEHEHE LOSER