In slope-intercept form, what is the equation of the line passing through the points (−2, 19) and (5, −9)? y = −4x − 11 y = −4x + 11 y = −4x + 3

Respuesta :

Answer:

y = -4x + 11

Step-by-step explanation:

For this case we have that the slope of a line is given by:

[tex]m = \frac {y2-y1} {x2-x1}[/tex]

We have the following points:

[tex](x1, y1) = (- 2,19)\\(x2, y2) = (5, -9)[/tex]

Substituting:

[tex]m = \frac {-9-19} {5 - (- 2)}\\m = \frac {-28} {5 + 2}\\m = \frac {-28} {7}\\m = -4[/tex]

Thus, the slope-intercept form equation is given by:

[tex]y = -4x + b[/tex]

We substitute any of the points to find the cut point with the y axis.

[tex]-9 = -4 (5) + b\\-9 = -20 + b\\b = -9 + 20\\b = 11[/tex]

So, we have:

[tex]y = -4x + 11[/tex]

Answer:

Option B