Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. 5x+7=2y and y-9x=23
a) {}
b) 1 solution
c) infinite

The correct option is option B. It has one solution, and it's x=-3

Step-by-step explanation:

We have the following system of equations:

5x+7 = 2y                        (1)

y-9x=23                            (2)

Step 1: Solve for 'y' in equation (2):

y-9x = 23

y = 9x + 23

Step 2: Substitute in equation (1):

5x + 7 = 2y

5x + 7 = 2(9x + 23)

5x + 7 = 18x + 46

Step 3: Solve for x:

7 - 46 = 18x - 5x

-39 = 13x

x= -3

So the correct option is option B. It has one solution, and it's x=-3

Option B

The system has 1 solution

Step-by-step explanation:

We must solve the following system of equations

To solve it, clear y from the second equation and then substitute in the first equation

Now substitute in the first equation

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

all but the second one

step-by-step explanation:

cuz that one goes over 180

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