Write the equation of the line in the standard form. Containing (9,8) and perpendicular to 3x-4y-5=0.
Standard form is...
Ax+By=C, neither A nor B equal zero, and A is greater than zero.
This can also be written as...
slope is -A/B
slope is -(3/-4)
A negative of a negative is positive.
slope is 3/4.
The slope of the perpendicular line is...
Let's use the one point provided (9,8) to establish C...
Find an equation of the line containing the given points (1,3) and -3,-7). Express your answer in slope-intercept form.
Slope is the change-of-y divided by the change-of-x.
You can label either point 1. As long as you are consistent in that you denote the 1 to the x and y of the same point, it will not make a difference.
Subtracting a negative number is the same as adding a positive number...
THAT IS YOUR RESULT! YOU CAN DO IT!