Learn this...it helps
HOY -- horizontal line, 0 slope, represented by y = a number
VUX -- vertical line, undefined slope, represented by x = a number.
so ur equation y = -1....this is a horizontal line with a 0 slope
In slope intercept form it is : y = 0x - 1 <==....ur slope is 0 and ur y int is -1
In equation form it would be the following:
2r + 3s = 13.
I believe.
Find 10% of it (just move the decimal point one spot to the left) and multiply by 4
It can be simplified to 9/28