How many solutions does this system of equations have?

3x – 4y = 12
y = 4x – 3

a. 0
b. 1
c. 2
d. infinite

B. 1

Step-by-step explanation:

Since one of the equations is already solved for y, let's use substitution to find out the answer.  We will sub in 4x - 3 for y into the first equation:

3x - 4(4x - 3) = 12 and

3x - 16x + 12 = 12 and

-13x = 0 so

x = 0.

Now we will plug in 0 for x into the other equation to solve for y:

y = 4(0) - 3 and

y = 0 -3 so

y = -3

The solution set as a coordinate pair for this system is (0, -3), the only solutiion.

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or