Aline passes through the points (8, –1) and (–4, 2). what is the y-intercept of this line? –4 –1 1 4

The y-intercept of this line: -4

Step-by-step explanation:

A line passes through the points (8, –1) and (–4, 2).

Slope = (-1 - 2)/(8 + 4) = -3/4

Equation in slope intercept form:

y = mx + b where m = slope and b = y-intercept

Substitute m = -3/4 into the equation to find y-intercept

y = -3/4 x + b

Plug in one of those coordinate points above to find b. In this case, I'm using  (–4, 2)

y = -3/4 x + b

2= -3/4 (-4) + b

-1 = 3 + b

b = -4

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points