Question

Medal awarded. the line joining the points A(-1,3) and B(5,15) meets the axis at P and Q. Find the equation of AB and calculate the length of PQ.

Answer 1

say Q is the point where it intersect with the x axis. now find the slope of the line

Answer 2

2?

Answer 3

of line AB

Answer 4

yes. I got 2 using this :D

Answer 5

but what about the length PQ? :/

Answer 6

Ohhh right, I get it!

Answer 7

thanks.. and now the second part?

Answer 8

notice that the point at P is a y-intercept which makes x=0. still using the slope equation, solve for the value of y

Answer 9

umm..can you explain further please?

Answer 10

same thing happens for Q. since it is an x-intercept then your y=0. you'll be able to find x

Answer 11

so what do we put it equal to?