How to make an equation out of

Question

0,5 and -3,-4 on a coordinate plane

Answer 1

assuming you want the equation for the line though the points (0,5) and (-3,-4), note that the slope of such a line is 3.

So, using the point-slope form of the line, you have

y-5 = 3(x-0)
or
y = 3x+5

Or, using the other point,

y+4 = 3(x+3)
y = 3x+5

Answer 2

Thank you but I don't get how to get that. What formula is there?

Answer 3

just google point-slope form. Lots of explanations out there.

I can't believe you are asking this question without having covered linear equations.