Question

PLEASE!! I NEED HELP!!!

Part A. Consider this equation. x − 4 = 16 What is the solution to the equation? Show or explain how you got your answer. Part B. Write a linear equation in one variable that has infinitely many solutions. How do you know it has infinitely many solutions? Part C. Consider this equation. 3(4 + x) = 3x − 6 How many solutions does the equation have? Show or explain how you got your answer.

Answer 1

Part a)

x - 4 = 16

added 4 to both sides; 16 + 4 = 20

x = 20

Part b)

y = x

I can plug in any value for x and the solution for y will be true.

Part c)

12 + 3x = 3x - 6

18 = 0

there are no solutions

18 does not equal 0

if you graph it the lines are parallel