Error Analysis A classmate found the slope of the line passing through (8,-2) and (8.10), as shown at the right. Describe your classmate's error. Then find the correct slope of the line passing through the given points.

m=undefined; 12/0

Step-by-step explanation:

The classmate's mistake is that she should have placed the y and top and the x on the bottom.

m= 10+2/8-8

m= 12/0

The slope is undefined, meaning that it is a vertical line.

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

it has to have an angle of 90 degrees