Johanna ha a cell phone plan that ha a monthly charge plu a per text fee. In October, he ent 45 text and her bill wa $37. 25. In November, he ent 118 text and her bill wa $40. 90. Part A
Determine the y-intercept and write it in coordinate form. (
,
)

Part B
Explain what the y-intercept repreent in the problem ituation.

In mathematics, the intersection point is the point on the y-axis through which the slope of the line passes. The y-intercept is where the line or curve intersects or touches the y-axis. This is the vertical, often dark line in the middle of the chart. The y-intercept of a chart is the point where the chart intersects the y-axis. Y-INTERCEPT means the y-coordinate of the point where the line, curve, or surface intersects the y-axis.

in given problem take number of text represent as x coordinate and cost of month represent y coordinate , then

[tex](x_1,y_1)=(45,37.25)\\(x_2,y_2)=(118,40.90)[/tex]

Now using slope formula ,

slope m = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

=> slope m = 3.65/73 = 0.05

Now using equation formula ,

[tex]y-y_1=m(x-x_1)[/tex]

=> y-45 = 0.05(x-37.25)

=> y-45 = 0.05x-1.8625

=> y= 0.05x+45-1.8625

=> y = 0.05x+43.13

Here we know that equation general form is y = mx+b , where b is

y intercept.

Therefore y intercept is 43.13 and it represent the constant variable.

To learn more about y-intercept refer the below link

https://brainly.com/question/12691869

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