Write an equation of the line that is perpendicular to 3x - 4y equals 9 + contains (-4, -5)

So perpendicular lines have slopes that are negative reciprocals to each other, but firstly we need to find the slope of the original equation. The easiest method to find it is to convert this standard form into slope-intercept.

Firstly, subtract 3x on both sides of the equation:

Next, divide both sides by -4 and your slope-intercept form of the original equation is

Now looking at this equation, we see that the slope is 3/4. Now since our new line is perpendicular, this means that its slope is -4/3.

Now that we have the slope, plug that into the m variable and plug in (-4,-5) into the x and y coordinates to solve for the b variable as such:

In short, your new equation is y = -4/3x - 10 1/3.

i think it is 18

step-by-step explanation:

d 600 because 15*10*2=300

300+300=600

step-by-step explanation: