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Please help me write the equation of a line that passes through the point ( -1, 5) and has a slope of -7

Sagot :

Answer:

y = -7x - 2

Step-by-step explanation:

use y = mx + b

y = y-coordinate = 5

m = slope = -7

x = x-coordinate = -1

b = y-intercept = the only missing piece/what we're solving

usually, for an equation, x and y stay as variables, but to find the y intercept we need to plug in the coordinates:

5 = (-7)(-1) + b                   multiply -7 and -1

5 = 7 + b                           subtract 7 from both sides

b = -2                              

plug b into the equation and leave x and y as variables:

y = -7x - 2