(08.03)consider the following pair of equations:

y = −2x + 8
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.

Step-by-step explanation:

y = -2x + 8

y = x - 1

solve by substitution

so y = -2x + 8so sub -2x + 8 in for y back in the OTHER equation

-2x + 8 = x - 1 add 2x to both sides

-2x + 2x + 8 = x + 2x - 1combine like terms

8 = 3x - 1add 1 to both sides

8 + 1 = 3x- 1 + 1combine like terms

9 = 3x now divide both sides by 3

9/3 = (3/3)xsimplify

3 = 1xwhich is the same as 3 = x

so now that we know x is 3, sub that back into either of ur original equations to find y

y = x - 1

y = 3 - 1

y = 2

lets check it(3,2)

y = -2x + 8                          y = x - 1

2 = -2(3) + 8                       2 = 3 - 1

2 = -6 + 8                          2 = 2 (correct)

2 = 2 (correct)

so ur solution is (3,2) <

7

step-by-step explanation:

5x+10 is the correct one

hope this