I think the answer is
1) 3/2
The slope of the function is given by its derivative. You want to find the values of x such that the derivative is between -1 and 1.
... f'(x) = 0.4x +5
... -1 < 0.4x +5 < 1 . . . . . your requirement for slope
... -6 < 0.4x < -4 . . . . . . subtract 5
... -15 < x < -10 . . . . . . . multiply by 2.5
Any value of x that is between -15 and -10 will be one where the tangent line has a slope between -1 and 1.
_____
The graph shows tangent lines with slopes of -1 and +1. You can see that the slope of the graph of f(x) is between those values when x is between the tangent points.
Answer:
This question cannot be solved.
Step-by-step explanation:
It has more than one equal sign; there is no way to compute this.
Because you're given a point and the slope, you're going to use point-slope form.
Point slope form: y-y1=m(x-x1)
You have to put your given values into the equation.
y-12=4(x-22)
Because it wants the equation in standard form, you leave the equation as is.
I hope I was able to help. Best of luck!