GeoGebra Classroom

## OBJECTIVE: To find the equation of a line given different conditions

Now let's move on to the TWO-POINT FORM. The applet below will drill you in finding the equation of a line, given two points (x﻿₁, y﻿₁) and (x﻿, y﻿). The applet generates only problems where the y-intercept is an integer. Instructions: 1) Determine the equation of the line that passes through the indicated points. 2) Type your answer in either STANDARD FORM or SLOPE-INTERCEPT FORM into the input box provided. (Be sure to type EXACT VALUES of parameters!) 3) If your equation is correct, you'll see a big "CORRECT!!!" sign appear. The correct answer will also be displayed in SLOPE-INTERCEPT FORM. 4) Click the "New Problem" button to generate a new problem. Repeat at least 10 times.
Finally, we're down to the last form, the TWO-INTERCEPT FORM. The applet below will drill you in finding the equation of a line, given both intercepts, the x-intercept (a, 0) and the y-intercept (0, b). Instructions: 1) Determine the equation of the line that passes through the two intercepts. 2) Type your answer in either STANDARD FORM or SLOPE-INTERCEPT FORM into the input box provided. (Be sure to type EXACT VALUES of parameters!) 3) If your equation is correct, you'll see a big "CORRECT!!!" sign appear. The correct answer will also be displayed in SLOPE-INTERCEPT FORM. 4) Click the "New Problem" button to generate a new problem. Repeat at least 10 times.

## SO there! You're now a pro at finding the equation of a line given different conditions.

Just to wrap up this session, what's your biggest takeaway in today's class?