Final answer:
The value of y can be found by substituting the value of x into the equation y = 9 + 3x. For each value of x, solve the equation to get the corresponding value of y which can then be used to plot a graph or create a table of values.
Step-by-step explanation:
To find the value of x and the value of y, we can use the equation y = 9 + 3x. This is a linear equation where 9 is the y-intercept (b) and 3 is the slope (m). To find specific values of y for given values of x, we simply substitute the value of x into the equation and solve.
For example, if we wanted to find the value of y when x is 5, we would plug in 5 for x in the equation:
- y = 9 + 3(5)
- y = 9 + 15
- y = 24
Similarly, we can create a table of values for different values of x, and then use those values to draw a graph with a line that shows the relationship between x and y.