Question

A student created a table of values to help solve the following equation: y =4x +24 and y = 2x+6...what x-value is a solution to the equation?

Answer 1

x = negative 9 or x=-9

Explanation:

4x+24=2x+6. We can subtract 6 from both sides to get

4x+18=2x. After that, we can switch the sides to get

2x-18=4x, so negative 18 (-18) is equivalent to 2x. We get

2x=-18, divide both sides by 2 to get x=(-9).