When you substitute a value for x or y, you are x or y with a value.

When you substitute a value for x or y, you are  

✔ temporarily replacing

x or y with a value.

Step-by-step explanation:

Step-by-step explanation:

See whenever we have two variables like x and y.

And also we have given two equations in terms of x and y.

Example: ax + by = p  and cx + dy = q

In order to get the solution, we need to find the value of x and y using the given two equations.

So here what we can do is:

Consider any one equation and get x or y from that equation.

i.e consider ax + by = p  or x =

Now plug value of x (or y) from the equation you have considered into the another equation.

i.e c()+dy = q

Now solve this equation to get y (or x).

and after that we can find the other variable.

i belive those are the ones that are under 90 degreese.

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.