Question

(08.03)
Consider the following pair of equations:
y = 3x + 3
y = x - 1
Explain how you will solve the pair of equations by substitution. Show all the steps and
write the solution in (x, y) form. (5 points)
ILL GIVE BRAINLIEST!!!

Answer 1

Answer:

$(x,y) = (-2,-3)$

Step-by-step explanation:

Given

$y = 3x + 3\\y =x-1$

Required

Solve by substitution

Substitute $x-1$ for $y$ in the first equation

$y = 3x + 3$

$x-1 = 3x + 3$

Collect like terms

$x-3x =1+3$

$-2x =4$

Solve for x

$x = -2$

Substitute $x = -2$ in the second equation

$y = x -1$

$y = -2 -1$

$y = -3$

So: the solution is:

$(x,y) = (-2,-3)$