Final answer:
The value of c in the equation y = -7x + 140 is 140.
Step-by-step explanation:
The y-intercept of the graph y = -7x + 140 is located at the point (0, c). To find the value of c, we need to substitute x = 0 into the equation:
y = -7(0) + 140
y = 140
So, the value of c is 140.
Learn more about y-intercept of a linear equation