I have no idea what I'm doing on these two problems:
The function f(x) = 25x + 400 represents Jason's total savings after x weeks. How much as he saved after 8 weeks?
Suppose y varies directly as x and y = 27 when x = 3. Find x when y = 45
Write the point-slope form of an equation for the line passing through the point at (3,-6) with slope -4/3
Deteremine whether the relation {(3,2), (4,5), (-3,5),(-4,2)} is a function.
Can somebody please explain how to do these?
step by step would be greatly apperciated
The function f(x) = 25x + 400 represents Jason's total savings after x weeks. How much as he saved after 8 weeks?
Suppose y varies directly as x and y = 27 when x = 3. Find x when y = 45
Write the point-slope form of an equation for the line passing through the point at (3,-6) with slope -4/3
Deteremine whether the relation {(3,2), (4,5), (-3,5),(-4,2)} is a function.
Can somebody please explain how to do these?
step by step would be greatly apperciated