Answer:
The rate of change, also known as the slope, in a linear equation of the form y = mx + b can be found by looking at the coefficient of the x variable (the number in front of x).
In this case, the equation is y = 15x + 34, the coefficient of x is 15, so the rate of change or the slope is 15.
The slope of a linear equation tells us how steep the line is and the direction it is going. A positive slope means that the line is going upward to the right, while a negative slope means that the line is going downward to the right, and a slope of zero means that the line is horizontal. So in this case, the line is going upward, and for every change in x by one unit, there is a corresponding change in y by 15 units.