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2 votes
Is (2,10) a solution to this system of equations?

y = 4x + 2
y = x + 8

Yes or no

2 Answers

6 votes

Answer:

yes, it is

Explanation:

10 = 4(2) + 2

10 = 8 +2

10 = 10

10 = 2 + 8

10 = 10

User Mskw
by
5.2k points
5 votes

Answer:

The answer is yes

*View the attached graph to check your answer graphically.*

Explanation:

y = 4x + 2

y = x + 8

For this problem, I will be using substitution, since the second equation is already in the slope-intercept form.

First, I will substitute the second equation, for y, in the first equation:

y = 4x + 2

y = x + 8

x + 8 = 4x + 2

Next, subtract 4x from both sides to isolate x:

x + 8 = 4x + 2

-4x -4x

-3x + 8 = 2

Then, subtract 8 from both sides:

-3x + 8 = 2

- 8 - 8

-3x = -6

Now, divide both sides by -3:

-3x = -6

/-3 /-3

x = 2

Now, we find the value of y by substituting 2 for x:

y = 4x + 2

y = 4(2) + 2

y = 8 + 2

y = 10

(x, y) ==> (2, 10)

Therefore, yes (2,10) is a solution to this system of equations.

*View the attached graph to check your answer graphically.*

Hope this helps!

User BNazaruk
by
5.1k points