emmawytko

13.01.2020 • 

Mathematics

Quick ! 1.which equation has a graph that is parallel to the graph of 2x - 3y = 1?
select one:
a. y = (2/3) x - 7
b. y = (3/2) x - 7
c. 3x - 2y = 1?
d. 2x + 3y = 1? 2.which of the following is in the solution set of

y < 7x - 6

select one:
a. (9, 55)
b. (11, 85)
c. (9, 59)
d. (12, 91)
4.which equation has a graph that is perpendicular to the graph of 14x - 15y = 1?
select one:
a. 15x - 14y = 1
b. 14x + 15y = 1
c. y = (-14/15) x - 7
d. y = (-15/14) x - 7

Ответ:

jbug6780

10.03.2020

Mathematics

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Ans: Multiply both sides of the equation by 1/3 .

3x^2 + 18x = 21
Multiply both sides of the equation by 1/3 . [because coefficient of x^2 must be 1]
x^2 + 6x = 7

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