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Which equation represents the line that passes through the points (3-,7) and (3,3)?

A) y = 2/3 x + 1

B) y = -2/3 x + 9

C) y = 2/3 x + 9

D) y = - 2/3 x + 5

Respuesta :

gmany

The slope-intercept form:

[tex]y=mx+b[/tex]

m - slope

b - y-intercept

The formula of a slope:

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

We have the points (-3, 7) and (3, 3). Substitute:

[tex]m=\dfrac{3-7}{3-(-3)}=\dfrac{-4}{6}=-\dfrac{2}{3}[/tex]

[tex]y=-\dfrac{2}{3}x+b[/tex]

Put the coordinates of the point (3, 3) to the equation of a line:

[tex]3=-\dfrac{2}{3}(3)+b[/tex]

[tex]3=-2+b[/tex]      add 2 to both sides

[tex]5=b\to b=5[/tex]

Answer: [tex]\boxed{y=-\dfrac{2}{3}x+5}\to\boxed{D)}[/tex]

The equation represents the line that passes through the points (-3,7) and (3,3) is (y = - 2/3 x + 5) and this can be determined by using the two-point slope form.

Given :

The line passes through the points (3-,7) and (3,3).

The following steps can be used in order to determine the equation of a line that passes through the points (-3,7) and (3,3):

Step 1 - The two-point slope form of a line can be used in order to determine the equation of a line that passes through the points (-3,7) and (3,3).

Step 2 - The two-point slope form is given below:

[tex]\dfrac{y-y_1}{x-x_1}=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

where [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] are the points on the line.

Step 3 - Substitute the values of the known terms in the above formula.

[tex]\dfrac{y-7}{x+3}=\dfrac{3-7}{3+3}[/tex]

Step 4 - Simplify the above expression.

6(y - 7) = -4(x + 3)

6y - 42 = -4x -12

6y + 4x = 30

3y = -2y + 15

Therefore, the correct option is D).

For more information, refer to the link given below:

https://brainly.com/question/2564656