Solve the system of equations - 2x + 2y = 28 and - 2x - 3y = - 17by combining the equations .

4x + 5y= 11

Step-by-step explanation:

2x+2x= 4x

2y+(-3y)=1y

28+(-17)=11

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.