Question

How do I solve this question by graphing
y=3x-8
y=x-8

Answer 1

Explain how please

Answer 2

Well those equations are in y=mx+b
where m=slope and b=y-int.
So your y-int. is where you can start your line. In this case both start at-8 also known as (0,-8)
As for your slopes
\[slope = \frac{ rise }{ run }\]
Up is for positive slope down is for negative slopes.
so if you has 3 as the slope then it's
\[\frac{ 3 }{ 1 }\]
Up 3 over(to the right) 1 to find the next point on the line.
And if you slope is 1 which is what the second one is because it just says x
then you have
\[\frac{ 1 }{ 1 }\]
Up 1 over(to the right) 1 to find the next point on the line.