Final answer:
To find the value of y when x is 1, 2, and 3 in the equation y = 3x + 4, plug in the values of x into the equation to get y = 7, 10, and 13, respectively.
Step-by-step explanation:
The question is asking about finding the value of y for specific values of x in a linear equation.
In this case, the equation given in the question is y = 3x + 4.
To find the value of y for x = 1, 2, and 3, simply substitute the given x values into the equation and solve for y.
- For x = 1: y = 3(1) + 4 = 3 + 4 = 7
- For x = 2: y = 3(2) + 4 = 6 + 4 = 10
- For x = 3: y = 3(3) + 4 = 9 + 4 = 13
Therefore, when x is 1, y is 7; when x is 2, y is 10; and when x is 3, y is 13.
This process involves using the slope-intercept form of a linear equation, where 3 is the slope (m) and 4 is the y-intercept (b).