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

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

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet